C2BTX is still an extremely strong shape for carving, for me it seems to be very similar to traditional positive camber, so I wouldn't worry too much about that regressing your skill level. The center rocker does absolutely destroy the pop you can get out of these boards (pop as in jumping straight up with both legs simultaneously) but they still have plenty of ollie power, so it just takes a bit of getting used to if you want more vertical on your jumps.
BTX, however, will probably disappoint you a whole lot. the flat/rocker/flat design is much washier and nowhere near as stable at speed. Make sure you're looking at camber/rocker/camber designs.
I ride a Lib Tech T.Rice, and it sounds like it's right up your alley. Very stiff C2BTX, aggressive magnetraction is great on ice, and it's fantastic at high speeds.