some questions about bases from a new player

Hi guys, I'm new to ef and I had a few questions about bases that I was hoping I could get some opinions on.

First off, what are the best bases to buy that will run straight without any tweaking (I don't have much free time so I'm not into learning how to tweak)? I bought some proline rookies from miggle but they all seem to pull right. Do the buzzball bases or those from any other companies work better?

Also, is there anyplace online to buy pre-tweaked bases? I'm not looking for anything fancy, just some basic rookie or TTC bases that run fairly straight which my friends and I can use for a game.

Thanks.