like always really depends on what you are trying to accomplish with the ski. eventhough i'm a kawi guy from day 1 the yami motors are no comparison for bottom end power. really need to put a lot of work into a 750 to make it perform like a stock yami down low. i've never ridden a 760 but the 701s i've been very impressed with them. currently putting together a big pin bottom end with SS Xi cylinders (best port timing) sleeper kit, factory pipe, twin 42 keihins, should be interesting to see how she performs this summer. and as for reliablity my 750 i've ridden for a long time and put hard hours on it, finally took it apart for the sleeper kit, the crank and top end was still in good shape, i'm always fixing my older 650's but the 750s i've had hardly any problems the last decdade.
diesel