3dbandit
100cc
6s3300 is perfect. Checkout YellowJackets and Glacier packs.
The HS-7245MH are the best performing servo for the price. You can get some absurdly powered heli servos, I think [MENTION=646]cwojcik[/MENTION] and [MENTION=699]3dbandit[/MENTION] used them, but they're a bit more expensive.
Yes, I use them. They are great. They open up an entire world of maneuvers I wouldn't think of doing without them.
I use the BK branded ones.