We've got some seariders (c. 1980), two ribcrafts (4.8 and 5.45 c. 2000) and 2 rib-x (5.2 and 6.5 c.2006) amongst others.
Obviously searider tubes are tough as old boots, so for pontoon bashing ability alone, a 5.4 or whatever would be ideal. But they're also a little bit agricultural looking to use with 'clients' and also are a tiny bit wet as well!
The two ribx boats look pretty, and the hulls are good but the fitout feels a little flimsy, and the tube quality is definitely not that good, and we've had a few significant problems on the smaller boat.
Which leaves the Ribcrafts. Both are very well made, dry, well fitted out boats with very strong tubes and a very forgiving and seaworthy hull design. However we find that the 4.8 is a tad small when teaching PB2 with three clients onboard. Given the heavy use they've had over the last 8 years, they're looking really good still!
That was just a really long winded way of saying 'go ribcraft!' When eliciting feedback, it might be worth thinking about whether the people recommending a particular brand are in some sort of 'close working relationship' with a particular manufacturer. As you can see by the mixed fleet and the fact that we're a university, we have no connection with any of the above manufacturers, aside from being happy customers.