Hi SG,
I have the 3.3 with a dinky little 3.3 hp, works fine ferrying from a to b.
Blows up quick, sides and bottom are tough and it has been given a workout. It can be a bitch to roll up and store, heavy and bulky, but this is 'the 3.3mtr mind you so no apples for apples here.
This gent imports them directly, he was telling me the cheaper chinese inflatables have lowered his profit margins to really skinny as he believes his quality is much better than some of the cheaper brands.
This was the poor inflatable that we lost on the weekend though.

I had a bridle for towing attached to the two steel rings located low and to the sides on the bow, tore them straight through the fabric, The centre steel ring on the bow I had noticed had started to tear the vinyl retainer. This is from the kids dragging it up the beach by the painter.
Cheers,
SB