Hiya Reggie, welcome to the world of robots

Fast but cheap servos...the vast majority of ants use geared motors and small speed controllers rather than servos now, if you're after servos (for simplicity) then I can reccommend the GWS HPXF or the Naro +F HP BB, the latter of which are available pre-modified from the RW101 shop - more info on gearmotors and speedos can be found on the RW101 forum with a bit of digging as that's where ant builders tend to congregate.
I can't help much regarding the second question as I've only ever used two stick transmitters, sorry :P

Hope that helps, what sort of ant do you have in mind to build?