I have the non-hydrowave version of your washer. the fast agitation is a bit much, with what looks like a 90deg. arc.
But I gotta say, i do like it.
It does a few interesting things. It does neutral drains :-(
After the wash, it does a series of pulse spins, it doesn't just spin before rinse.
No spray spin between wash and deep rinse.
BUT, it does the spray spin after the deep rinse which i kinda like. And the final spin is quite long.
Though it spins sorta slow, it gets things well ringed out.
I'm diggin' my GE dryer too with the auto thermostat sensors too.