Because of your affection for speed and carving, I'd stay away from pure rocker boards. A straight camber board is better for that (tracks more easily at speed, edge locks into a carve more firmly, etc). The hybrid camber boards are somewhere in the middle, and many are tweaked to be more aimed at freeriding (often directional shapes, a little stiffer flex, probably not super fun on rails), all-mountain (jack-of-all-trades: decent float, can charge and carve, playful and forgiving enough for the park - but there are better purpose-specific boards for each application), or park boards (soft, forgiving, often lower-priced and made of more inexpensive materials). Burton's Flying V, NeverSummer's RC, YES/Jones/Nidecker's CamRock, Lib Tech/Gnu's C2, and Capita's Freeride FK are all examples of hybrid camber. The idea is to get the playfulness and pow float of rocker, while still getting some pop, straight-line tracking, and carving ability from camber.
Some manufacturers have also started to make flat, zero-camber boards. The Capita Midlife and K2 Happy hour are good examples.
I agree with the recommendation of the Burton Custom. It's the board that defines the "all-mountain freestyle" category for a lot of people. Always a dependable choice. I also like the Machete. You may want to check out the GT version for a little lighter weight and more pop. I'm unfamiliar with the Rossignol Magtek.
You might also want to consider:
The LibTech TRS
Gnu Riders Choice
Capita Midlife, Outdoor Living, and Defenders of Awesome
K2 Happy Hour
Lots of great boards out there these days!