Right now I got my eye on Fuels and C4's
They're two very different types of "Cs". A bridled-C (C4) to a 4-line direct connection C (Fuel).
Try a Hadlow, Fuel, Torch, Vegas, C4 & Hifi Comp and pick which ever your in tune with. Each has it's own characteristics which some people love and some people can't get along with. I (still!!!) haven't flown a C4 or Hifi Comp but i can comment on the rest of them...
Hadlow '08 & '09 - awesome relentless power which rewards you with more pop the faster you ride. Fast turning. Very little different hooked or unhooked so you know exactly what your going to get when you unhook. Not much depower in the bar throw (4/6 line mode, no '11 pulley), need to edge and it'll shoot to the edge of the window fairly willingly.
Fuel '05,'07 & '09 - grunty power and quite aggressive to rip you off the water. Not quite as fast as the Hadlow in turning. Not quite as much depower as the Torch/Vegas.
Torch '07,'09 & '10 - powerful but less aggressive. A bit 'smoother' in it's delivery compared to Hadlow/Fuel. Reasonable bar depower throw. Same turning speed as Fuel but slightly different power delivery in the loops. Good all-round high-depower C.
Vegas '08,'09 & '10 - similar style to Torch but different power delivery again. Likes to accelerate to generate power, but different feel to the other three.
Of all of the above four, the Torch came the most naturally to me... hence why i ride them. The Hadlow was the most exhilarating. The Fuel was good but a little less well-mannered compared to the Torch. Regardless of how many times i try a Vegas, I just can't get into tune with it.
Definitely ditch your bows and move onto something more aggressive. The C's reward your effort and aggressive riding, and will keep you smiling even when you get spanked. That said, last time i copped a proper spanking was on an '05 11m Fuel in 25kn... everything else just gives you a gentle slap on the cheek and tells you to stop being a naughty boy...