G'day mate,
I ride a 9'10" & really love it!!
Somebody told me once that there isn't much difference performance wise btween the 9'5 & 9'10. I haven't ridden the 9'5 but my guess would be the 9'10 would def be more stable due its 3/4 inch more width & being a bit thinner also.
What I can tell you is its easy to manouvre in the lineup, gets into a wave early,is easy to bury the rail & surfs off the tail beautifully.
A very fun board