Hello, I'm looking for a board for under my 115 Freeride board. The RRD FSW is my weapon of choice, the thing I am doubting about however is the size. I weigh around 77-80 kilo's, and wanna sail it mainly with my 5.6 sail and a 4.7 sail also... I also wanna use the board in coastal conditions, but also on a lake when the wind blows hard... Most important factor is versatility.
What volume/size should I go for?

I have the 85l and am 80kg. Works great for me as a med wind coastal board or a high wind B & J board. I have used 4.2 - 5.7 with it. Love it!

^^^^what he said. I had JP FSW 84 that I used on flat and in waves from 4.2 - 5.7 and I'm 77kg. Should not have sold that board. Would love an RRD FSW 85.

Dont know much about rrd ( a mate does have a 95 rrd fsw though). Brand wise i think advice should be across the board.
I have had both a 93 jp fsw and Fanatic 85's fsw.
I weigh 78 and sold my 93 to get a 85 as i think that is a good step down from my 98 freestyle board.
If i was to have only one board for my weight i would go a 95 but as you are stepping down from a bigger board i would go the 90 or 85 rrd fsw.