B5 for truggy, B6 for buggy.

I really think your best bet is to just get a B2 with that Nvision 2058.. Great combo, great value, not too expensive, plenty of help here to get going.. Sorted.

Or an Alpha Club Racer with 2090 or 0801. Same deal.. Don't know about US prices for that though..(Here in Europe, it has the best price.. And the Alphas really are awesome too..)

There are 30+ very good engines out there to choose from, some cheaper, some very expensive.. If you have money to burn, get an OS Speed. If your tuning experience is not that extensive, stay cheap and learn on something simpler. That said, a B2 is by all accounts a full-on race-worthy engine, even for advanced racers - it's just extremely good value at half the price of a lot of the others. Same with the Alphas..

Ultimately, you'll never really find the answer on the internet. Here you can get input from a bunch of different people, but ultimately you're gonna' have to pull the trigger on something and see for yourself. Werks B2, Alpha, Werks B5 or B6 are all excellent choices that you don't have to doubt(B5 is maybe a bit heavy-hitting for buggy..), and great value for money..