Ride quality in any of the Sonics, 26' and up is very impressive for that particular size boat. (I have never been on a 22'.) I currently have a 26', and have been out in real 5-6' Chesapeake Bay waves and rollers, and while not saying I was overly comfortable, I am saying I felt safe, and not scared. All the Sonics feel as though they are at least 2-3 feet longer than they actually are when you put them to the test in bigger water. This is mainly due to their weight, which they are a bit heavier than other comparable sized boats, (not so after 2003 though, the new Infusion layup process reduced the weight, but do not let that discourage you from a 2002 or older), and their traditional deep V, with long strakes. The 31SS is a GREAT boat, and as a matter of fact, it is the best selling model of Sonic's lineup, past & present. If I did not have my heart set on a 37/38 foot boat, I would have traded up to a 31 some time ago. The 31SS will give you many features, amenities, and even the room you do not get on other manufacturer's 35 footers.
This post will probably get moved to the Sonic forum, or you can post there, and get even more information. There was also a side by side comparison to a 32 Fountain, 31 Cig, 312 Forumla, and 31 Sonic last year in Powerboat Magazine, (I believe those specifics to be correct), and the Sonic won hands down.