Both are excellent, but the Cardiac has a decided edge. It's smoother, faster, and a bit quieter. Having said that, the 34 is also smooth and quiet, and absolutely NO hand shock what so ever.

I went w/ the Cardiac for a couple of reasons. One, speed. That baby is flat out fast. Also, with the factory installed string supressor....well, all I can say is WOW! It is so quiet it's almost scary.

You really couldn't go wrong w/ either one, both are incredibly high quality bows w/ craftsmanship that is just amazing.