I am in the hunt for a light wind board ,thinking for sails 8.5 -9.5

as a heavy weight my 130 Titan was too close to my 125 tabou so hench been sold .also was only
good for sail up to a 8.8.

so my boards are 105 rocket ,115 Patrick ,125 tabou rocket .
I was thinking a 135-140 litre board would be perfect .
so I am looking at a 138 speedster tabou ,or a RRD firestorm 138 litre .
Can anyone shead some light on these two boards ...

I'm 97 kgs.
thanks in advance .