I just wrote a very lengthy response but my computer went crazy so I lost it, so in brief:
Ribcraft or Solent would be my choices.
Ribcraft: very solid, more expensive than Solent, more rugged. Overall - very well made boats.
Solent: bit more leisure oriented. Very fast (well, mine is!), look nice, bit cheaper, annoying niggles, although the two boats I know of with similar niggles have had a lot of use and abuse.