I'm looking for suggestions on a good servo for a B6 in the $40-$75 range. Any other suggestions on higher priced servos as well.
Thanks in advance!

Savox sells some nice sevro's in that price range

Well the xpert 4000 or 3000 series servos would be perfect. Plus they are low voltage so even if your esc has a weak BEC, you won't have any issues running them.

Protek 100ss.

My personal favorite in that price range (as long as you're ok with a full-size servo and aren't needing to go low-profile) is the Savox SC-1258TG. Plenty strong and fast for anything 1/10 scale (other than maybe a 4wd SCT) and the titanium gear-train is tough as nails! I've seen guys running these as steering servos in 1/8 scale buggies (not advisable, but possible) and I personally have them in probably 90% of my cars. The only word of caution that I would mention is that if you are running Spektrum radio gear, you might need a glitch-buster to plug into your RX when running Savox servos as they are a little power-hungry. I haven't had any problems personally, though, when I ran them with Spektrum RXs with glitch-busters and none at all with Sanwa/Airtronics radio gear since I have switched.