Hey Geoff...
I have owned mine for 21 years now, purchased new and have enjoyed owning her ever since. There are alot of good qualities built into the Hunter 33, mine is the same model year.. 1982.As with any boat 20+ years old, there are things that wear out normally, have to be repaired or replaced, but the boat itself is a great sailing sloop, has nice lines, plenty of room for a boat of that era, and is probably one of the better built productions boats out there including in todays designs. On the negative, if someone has not maintained the boat well, there will be more expense after the purchase that may have to be done soon and all at once. There in lies the problem, cost on repair and replacement add up quick. However, a well maintained older boat is often times more reliable than a new one. Also, improvements & repairs can be made as they are needed. It would be good for you to do as much of the maintainence and upgrades yourself, that will get you more familiar with your 33. Good luck, if you get her, hope you will be as happy as I have been with mine.