There's about a zillion choices for a mid-range hardtail frame. As long as it has a 13" - 15" sized seat post it will be ideal for trials & freeride, for commuting - just put the saddle up. You don't necessarily have to pay lots for a well known bran...
Um, you would be well to AVOID cheap carbon fiber frames. I design frames (including CF) and there are just too many shortcuts that can affect the strength and reliability. If you absolutely insist on carbon fiber, think about a Merida. They are good...
These are just a few of of the better known builders: Serotta Spectrum Cycles Columbine Cycle Zinn Cycles Moon Cycles Chery Cycles Courtney Custom Cycles Desperado Cycles Waterford Bikes Strong Frames Richard Sachs Calfee Design Seven Cycles Independ...