What Champ Should I Buy?

Buy the champion you want to play; simple as that. If you're just buying FOTM, you're going to be real disappointed once the meta shifts or they get nerfed. Any "weak" champion will be "overpowered" in the right hands, any "overpowered" champion will be "worthless" in inexperienced hands.

To answer the other question; Rek'Sai isn't as overbearing as she was on release, no; she's still very strong if you know what you're doing

I honestly dont feel like reksai is super strong at al!

Shes not naturaly tanky she does not do great damage her cc isnt that great and neither is her gap closer

I think shes allot better in carefully played games like the lcs

she doesnt really have cc to slow someone and can hardly chase someone

She works if you pick out enemys that are in a awful position,

when im playing jungle nidalee il be able to gank some lanes and get kils without the help of my laner easy (in allot situations) where when playing reksai i know im gonne need my laner there to back me up especialy the first few ganks so it really requires you to pick out the unfair batles and get fed there once you have some stuf it be easier

what works best for me is i pick a champ i think is fun to play, no matter howmuch theyl suck if there fun for me i will most likely play them allot wich wil eventualy lead into me getting better

rek'sai's getting nerf again she might be strong after the nerf tho