You should look at a used steiger or parker center console, they both make very nice, simple, and rock solid boats. Also you could look at some of the used downeast type CCs, might be a little out of your price range though.
Mine is for sale 1999 21' Boston Whaler outrage with a 200hp merc and trailer, when I sell this I am going to buy a 1999 26' Boston Whaler outrage with twins. Love that model from 1998-2001 rock solid. The 21' is small enough for inshore but heavy enough for offshore I have been 25miles offshore with her. Has new in 2006 VHF GPS FF AM/FM/CD. SS prop, Porta potti, with pumpout, new canvass covers. Fishing machine