I think you'd actually find the stability would go like this:
- Most stable: Nelo 520
- Fenn XT S (ideally - the XT S is the latest version of the XT, and is a massive improvement on the old XT)
- V10 Sport
- Least Stable: Zest
But they're all good boats, and should all have a good resale value. Great idea to test the Zest before buying. With any luck you'll be able to take it into some rough water to get an idea of how comfortable you feel in it.
Rob
Currently Epic V10 Elite, Epic V10 Double.
Previously: Swordfish S, Evo II, Carbonology Zest, Fenn Swordfish, Epic V10, Fenn Elite, Red7 Surf70 Pro, Epic V10 Sport, Genius Blu, Kayak Centre Zeplin, Fenn Mako6, Custom Kayaks ICON, Brian's Kayaks Molokai, Brian's Kayaks Wedge and several others...