Another vote for the Vista Cruise. I put it on two weeks and 1500 miles ago... no problems.
It's not as pretty as the Brake Away but on a midnight with black bars it blends in just fine and of course it's much cheaper.
The
only thing I can say is that a throttle lock on a big torque twin and
my previous ride, a high revving sport touring bike, are different
creatures. I found it hard to maintain a speed in the hills of West
Virginia but it gave my right hand all the short breaks it needed.