Pretty happy with my Hyperion 184 since Sep 2020 ( recreational use, no competition)
Can't make any comparison construction-wise since the SB boards I had where all wood-sandwich and not the lighter variants.
Still, the high gloss finish of the FMX is prone to scratches : would have preferred a more matte look.
ps:don't know how's your French :
www.windsurfing33.com/forum//viewtopic.php?f=15&t=128405