I’ve written a lot of feedback on the Unw8 and the Optimistic on this forum but no direct comparison as these are different boards.Sounds like you have some experience with both the Optimistic and UNW8. Do you have a long-term review/comparison of them?
The Optimistic is a short fat with a mid-stiff flex and a super short sidecut. I put my low int friends on it and they enjoyed it. An auto-turn board once you tilt it a bit that I’d put compare to Rome Stalefish, Ride Superpig, Salomon Dancehaul etc. (ofc they differ for power/fs focus within their category). For what it is intended to do it’s pretty much perfect but I don’t like short fats at all anymore for carving (they are fun in powder/fs).
The Unw8 is a super stiff all mountain freeridish board. Completely unforgiving for someone who isn’t a strong carver. It’s a carving/euro carving ATV but if I were to tweak it I’d give it a longer sidecut radius mid 9s and give it a mid longitudal flex point to make it easier to pop without interfering with its torsional stiffness that makes it carve so hard for a board in this category. From the boards I’ve owned/ridden I’d compare it to Amplid Pentaquark and Burton Leaderboard (the 3D raised contact points don’t give the full camber insta grip here though).