Yeah they are...They installed my gears, battle boxes, tuned my car on the n2o, and tuned my car n/a. Their prices are reasonable and they have been around since 1980 (i think), and work fast and hard.
I do all my tuning through datalogging and emails with Don LaSota at LaSota Racing. He knows his shit and has helped me through a bunch of minor problems. His prices are cheap and he is quick. Kind of nice having your car tuned on the street also, where it is driven.
Dyno tuning is nice, don't get me wrong, just another option for you.