Stopped by DRIS today to get fills and had a good talk with Mike. Tried on a regular Fusion (Sport?) in L/XL and it was a pretty good fit, even in arm/leg length (I'd taken my drysuit undies with me). Socks a bit big, but I can deal with that. As far as we can figure, the one with the monstrously long arms and legs I had as a rental two years ago must have been an 2XL. I've lost enough weight that I fit into the L/XL now. I ordered the Fusion Fit (Aircore). May have it by Friday, probably Monday at the latest.
I really liked the stretch and flexibility. I loved my USIA, but it was stiff. Fusion is also lighter, which will make my knees happy. Close fit also a positive. I've been diving wet for more than a year, and I love the flexibility in a wet suit (I have good Bare Evoke wetsuits in 3/5/7mm).
Still not a huge fan of the Fusion zipper, but I'll just deal.
You can say, "I told you so!"