I had the HS105 and then the HS111. HS111 was a GREAT board. A little tricky to get on the plane but then extremley fast. I clocked 51km/h with 6.5m sail.
I was able to plane in 14km/h wind with 8.5 sail, 44cm standard fin and 75kg. I really loved the way the board went upwind. It was not easy to gybe.
Starboard Isonic 127(C) / 107(C) / 101(W); Severne Reflex II 9,2; Severne Reflex IV 7,8; NorthSails RAM 7,0; GunSails Cannonball 6,5; North Sails Natural 5,4