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I have just recently quitted Lizardmen, because they wer just not my thing(you can try and get me to reconsider) so i need a new FB army, something that is fast and deadly but can be individual would be nice. so i need some opinions
Fast and lethal? You are probably wanting DE or maybe WE. DE gives you the most options, but WE do hit and run skirmish better.
Barring that, a bret, empire, or chaos warriors knight list could fit the bill.
Chaos Daemons themed mostly around slaanesh is the fastest army in the game, and daemons lethality is unquestioned. As for room for individuality, not so much. It might even be hard to find a casual game since daemons are a bit OP for some groups.
Lastly there is the ogre kingdoms. They are all kinds of not good, but they are fast and lethal.
Dark Elves Dark Elves Dark Elves!
Failing that, Bretonnians although I see little appeal in them.
Bretonnians are incredibly fast and hard hitting (gotta love the lance formation!). Each knight can be (and should be, IMO) painted in its own heraldry which can make painting the army satisfying and challenging. I've had many compliments on how unique the completely painted army looks on the battlefield (and I'm not that good). I just don't think people are used to seeing lots of individuality in armies nowadays. There's a lot of good fluff for Brets too.
Fast and lethal? Well, I know this guy in Kansas City that fits those requirements, but I don't know if he's up for hire or off the job.
Anyhow, that can describe almost any WHFB army. Every army has units that move far and fast and hit hard, but they're all different.
What do you like? Magic? Comat? Ranked armies? What kinds of characters do you like? Characters that do magic, shooting, fighters?
Also, which models appeal to you? You'll spend a lot of time assembling and painting and pushing them around a table. Make sure you like looking at them.