I own a WAVE, haven't sailed a GETAWAY. It seems to me that if money and space (storage) is not at issue, and you have a vehicle that can handle the trailer, the GETAWAY is the way to go.
Me, on the other hand, don't have yard space to keep a trailered boat, and refuse to pay storage rent, so I built a rack on the wall of my garage that holds all my WAVE gear and parts, including hulls, and I still have plenty of room for (2) cars. No trailer, no insurance, no tow and boat ramp launcing issues. I built some beach wheels and some rollers that slide into my car top so that I can manage the boat single handed.
The biggest thing for me, though, is that I really enjoy the workout of the car topping/assembly procedures. I paddled a kayak for years, and find myself getting a WAY better workout with my WAVE then I ever did with the kayaks. In addition to the car topping and assembly, on a windy day, it's 2 or three hours of scrambing and sit ups to keep the hulls balanced. Hull lifts out of the water, lean back, hull drops, lean forward. Lean into the oncoming wave, lean back as I slide down the face (the Pacific is cold, here, so I try to minimize splashing).
Golly, it's just greeeeeaat.
I went from 240 lbs. down to 180 but o lot of that weight loss includes a lifestyle/diet change.