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Ok, so I collected Tyranids first, they were great fun. I decided I want to expand to eldar to, since I recently got a box of Dire avengers. So I have left some people blank because I have NO idea what to put on them. Here it goes
Farseer (NO idea what to put on him)
5 Banshees + 1 Exarch with an executioner 108
6 Dire avengers 1 Exarch 96
10 guardians with missle launcher 100
1 Vyper (NO idea again with this guy)
War Walker with scatter laser 45
I have not included the points with the other models because I do not know what to put on them yet. Leaving them all blank it comes to 449 points. That leaves 51 points to play with, I know its not allot so cut-backs will have to be made with my list.
So shoot away!
My advice to you is right now buy an eldar battleforce, for the price it's not too bad, and you get an all-important wave-serpent. Then after that I recommend a seer-council (the box with a farseer and 3 warlocks [as buying warlocks seperately is an expedition in pain]), and a wraithlord. You have now set yourself up for 500-750 pt games spending 80% of what you would to acquire these things individually.
I would suggest you read the link in my sig to get a better understanding of this army. It's very easy to do it wrong, also vyper tactics are covered quite extensively by Fritz at Way of Saim Hann
My compiled thoughts blog.
If someone posts something helpful +rep them