For multiple person floats, I'd probably stick with my 13' raft. But, would go for one of those frameless gizmos from the company I'm not fond of if I didn't have to deal with the company I'm not fond of. They seem to make a decent frameless 2-3 person watercraft.
Reason I'd go with the frameless is strictly portability. Right now, trailering my raft isn't an issue but down the road may have some sort of RV and IF I HAD TO HAVE JUST ONE RIVER BOAT, that'd make the trailer obsolete.
If it was strictly a solo person fishing craft, my WM or an 11' Sotar cat with easily broken down frame.
I was in your boat a while back (pun intended). I can sympathize how difficult it is to track down that right boat. It will happen in time though. Your doing the right thing which is researching. My best advice is that since you are comparing two crafts from the same manufacturer, it would be wise to give them a call with that question as you will get a true objective answer.
I know it's kinda old and flabby, but I still love my little Tote-N-Float. It was the precursor to the Watermaster or Scaddens open bow options. Only 23lbs when deflated and I can take it in the back of any car.