Sorry BigD... Didn't meant to put you off the Pelin... They're wonderful little boats. Not as stable as a cathedral or cat, but on the plus side, super easy to handle without having to have a crew.
I strongly suggest talking to the guys who build the Pelin (boating shed if I remember correctly) and asking them for a demo... Get on the water and see for yourself what they are like at rest on flat water. They have an excellent pedigree.
Seacat is great, but it's a big step up in size and lack of ease of handling, towing, maneuvering etc. The Bandit 490 is significantly less boat than the offshore cats... Only comparable cat that I could think of would be something like a Witsblitz... But I don't have any experience with them so unable to advise there.
I'd rather go with a small mono than a small cat... IMHO.