I think that the Hunter 28.5 is one of the best kept secrets in the used boat market. I have a 1986 model and love it. As indicated, there are over 50 owner reviews of this model boat on this site. I dont think youll find many who dont like the boat. And here is a short list of likes/dislikes I recently sent to the H28.5 website:

What I like best about my Hunter 28.5:

Good looks
Great sailing performance
Easy to single hand
Low purchase price (very competitive on east coast)
Fairly easy to maintain
A very reliable Yanmar diesel
Big enough for small family cruising
Just enough boat

What I like least about my Hunter 28.5:

Iron keel (although not a big deal)- Foss Foam rudder
Somewhat tender (also not a biggie)
Expected low resale value
No suitable drain under engine for stuffing box
Salon table takes up too much cabin space
Difficult to access upper rear of engine