I just went through this decision and for me to add the comptip, epo rudders aussie system, etc it was a better deal to get a newer boat that someone already had set up. I happened on a great H16 already set up.

Note however that even with the newer (88) boat I still get my tail whipped by guys sailing much older boats! Blowing a tack will cost you more time than all the new stuff could ever add to the speed of the boat.

Definitely check into new shrouds if yours are old. Its no fun to be dismasted when a shroud gives way.