I considered a 14' RMR, Tributary, and NRS Outlaw, all welded PVC, and bought the Outlaw. Cheapest of the three by around 7-800 dollars, larger than the Tributary (wider), and a bit lighter and smaller packed size than the RMR. Has the drop stitch floor that some dislike. Does make it easy to stand, but I expect to collect some sand and silt at times. The RMR appears the most "traditional", with laced I-beam floor and no extra bladders. So if you want a PVC boat that has a design closest to the typical hypalon boat it'd be RMR. Once you're into hypalon the new are spendier by quite a bit from what I can tell.
Used the outlaw just a little and liked it.