I've been enjoying my new 2013 iS127 and Severne R4 9.2m with a 49 Select. I'm 95kg, and can get planing on this in 9 - 10 knots. With max downhaul, I can still be out there in 15-18 knots+.
13-15 is sweet...
The early planing of this combination for my weight is sensational, and I'm still using it with a 'dodgy' fin. I've got a 50cm carbon Volt on the way for light wind, and also a 46 carbon volt to use with this board and my 7.8 R2 in 15-20.