I have been riding my 6'0 Dom as a quad and it has been going very good but after reading about the deviant fin decided to give it a go. I have G5 fins in my board and with the deviant in my board seems very fast and loose.(maybe that is just the Dom.) I also have a 6'6 flexfire (2nd hand) that I have had for 2 months but have not ridden yet. Today there was a good swell at the local left hand point (8-12ft faces) (I'm a natural footer) I put in the G5 fins and deviant and was stoked at the way my flexfire went. I could drive off the bottom and turn off the top with power and speed and cutback with a foam bounce very smooth and fast.(Hope the swell stays around) All in all very happy with the deviant.( and my 2 firewires, maybe just need a 6'0 Hellfire and I will have all bases covered, oh and maybe a 5'5 baked potato as well.)
On a side note I was wondering if anyone knows the difference between the FCS G series fin and the FCS M series fin. I have both but have only used the G5 so far as it seems to go pretty good. I also hace a set of FG3's but as I'm 87kg I though they might be a little small for my boards as the 5's don't feel too big,especially as I will only be riding the flexfire in overhead + waves and my Dom seems to like a bigger fin.