I have a 490c the smallest they make and the father in-law has a HT in the 7m range, BC flew us down to melb to have a look through their factory (That's why i bought one for my self). Every ones got an opinion, mine is: they handle bloody well, easy to clean and set out nice. Surtees do a nice boat when looking at the 4.95 work mate compared to the 4.9Bc, the BC had a lot more as standard for the same price.
Go as big as you can, with the drive on drive off trailer (bar-catch) its easy as to handle. Comes down to $$$$