Warp F2007 vs RS Racing

[superidis]

Hi to everybody, I am 82 Kg recreational sailor experienced but not pro and I'm looking to buy a fast and considerably soft new race sail around 7.8 for the new Isonic 122. I'm between the RS Racing and the Warp F2007 since up to now I always had race sails but I would like a more experienced opinion from you guys regarding top end and feel for each sail. Also I would like to ask if the RS racing works with the X6 instead of the X9 mast.
Thanks in advance, best regards.

PS : Wind conditions where I sail gusty between 10-20 Knots.