I've never flown the pipers so cannot comment on them.
But someone has a review of them here:
http://www.flickr.com/photos/64278242@N00/
Best places : Fernandina Beach, St Augustine, Merritt Island and Flagler - not the most interesting place - but Hijackers Restaurant is top notch!
Try Key West - but you get back very little in terms of fuel money - the hour building only includes fillups at KOMN. Looking at a good 3.5 hour each way. So burns up the hours nicely.
JT's house is great - and well worth the visit! The 707 was in residence when I was there.