Welcome to Librarium Online!
I have been playing high elves for a couple of years now and i am looking to start a new army now here is my problem i want an army that i can team up with my high elves in double comps so i am looking for an army that can complement them well in that respect but i will also be using this new army to play agenst my high elves when i play with my son.
Now at the moment the choices are the new empire which comes out on the 7th or lisard men or brets.
I look forwad to reading what you all think and sorry about the spelling.
I'd toss Brets out as a no-go, since they're generally considered a poor army at the moment. That's not to say that they can't win games, but you are very limited as to what "good" units they have, and it's easy to counter their most effective playstyle. Not to mention, Swordmasters eat Bret armor. As far as a complimentary playstyle, it depends - if the Brets can benefit directly from allied magic (Augments, etc) then they might do well next to the high elves - especially if the High Elves take the approach of bringing the elite infantry while the Brets support their cavalry or cheap-horde needs.
The next army you mention is the Empire, who could make a nice addition to HE by bringing them a lot of long ranged weaponry and (if Priests stay the same) give them a nice bit of Magic Defense, letting them focus 100% on ripping the foe to shreds in their casting phase. Empire also brings a lot of cheap infantry, which the Elves can bolster with their own elites. The Detachment System of the Empire (I imagine it will stay in some form or other) is very similar to how the Elves play at the moment, so you would likely be using your Elf counterpart as detachments to your Empire regiments.
I can't comment much on the Empire yet, because I haven't seen their book.
The best bet, in my opinion, would be to take the Lizardmen. They bring a very solid block of troops to the table in the form of their Saurus Warriors, they have Monsters (something lacking in the HE book, outside of Dragons) Monstrous Infantry, and cheap hordables, plus they compliment the High Elf magic perfectly, by bringing a non-character Slann who can be almost as powerful as Teclis. In an mixed army, Lizardmen hold the line (being as tough to kill as a Chaos Warrior and as stalwart as Dwarfs) while the Elves provide the fast-moving elites to support combats and take the fight to the enemy.
Other armies to look into would of course be the Dwarfs, similar to a cross between the Lizardmen and Empire with their long range and sturdy battleline.
There's not much to add to CaptainSarathai's points to be honest.
From a pure tournament playing perspective the best bet out of the presented options is going to be empire, as they will give you the numbers that make the difference to a high elf army. Cannons are something that high elves lack too, so empire bring that to the table. They also have monstrous cavalry in the new book, although it remains to be seen if they're as powerful as juggernaughts or mournfangs (I suspect not).
Not sure how old your son is or how interested he is in the hobby... but if he's perhaps pre-teen then Lizardmen are probably the easierst sell. Never met a kid that didn't get excited about the idea of dinosaur men with magic toads and ranpaging triceratops chariots! As Sarathai said - they're quire complimentary in play style to the elves, adding a bit more staying power to your infantry so you can go for more swordsmasters rather than white lions or phoenix guard to hold the center as that is something saurus excel at.
Dwarves are interesting - they're noticably slower than your elf units, but have twice the staying power. A nice big unit of dwarves in the center of your lines means you aren't going anywhere anytime soon. They also have cannons and other ranged warmachines that are a great compliment to an elf army as the bolt thrower isn't nearly as good as a cannon or stone thrower at killing monsters or heavy infantry etc. You'd certainly have to change your playstyle with your elves to accomodate the slower moving dwarves, but it could work quite well (as long as no-one mentions the war of the beard!).
Bretonnians are quite outdated right now and in need of an overhaul. It saddens me as they're one of my favourite armies to play with, but they're a one trick pony that is relatively easy for a competent player to counter. Also, having half your army of heavy cavalry charging across the board while your elves are walking forwards casting magic doesn't really harmonise very well.
'War does not determine who is right, only who is left'
I am President of the Brunel University wargames society - PM me if interested.
Thanks guys that is a great help so far i must say i am not a great fan of dwarfs so they are out the question so it is between empire and lizardmen at the moment bur thanks agen that has been a great help so far
I would explore the new Empire army coming out. It's a fresh start. That said, if you want to wreck some serious face when teaming up with High Elves, Lizardmen are a known quantity, and what is known is that they OWN the magic phase.
"The best defense is a good offense." -Gen. George S. Patton
My philosophy on gaming, courtesy of Herm Edwards.