Just came across this 8.5m Pro Sport. Fair enough its longer than what you want but the extra length will give a softer, smoother ride at sea. This one's a beauty too!! I'm sure Ian and Jono who boat post here will give you good advice as regard Pro Sports, they both have very nice Prosports.
This one may also be worth a look. Its a Solent, which I think are quite new. Again there are a few Solent owners and dealers on here who will advise you. They're good value too!!
Don't forget Tornado too. They give an excellent ride in the rough stuff as they have a high deadrise angle (I think thats what its called anyway) and are very strong boats.
Thats just a few but there are plenty of others as well, that I'm sure the others will add. Parker ribs from Poland would be another good choice. There's pics of 2 lovely new Parkers in the Gallery.
You'll get plenty of good advice here after everybody gets back from their Bank Holiday cruises and jaunts. Oh the joys of being boatless!!