After snooped and gleaned some valuable informations here, I finally decided on a Filco majestouch (brown switches).
I hope it will match my tastes, I've never tried any MX switch except the black (Steelseries 6gv2) which I didn't like, pretty stiff, a lot more than my actual rubber dome (MS X4).
I'm not a good typist (I'd rather say I'm not a typist at all:), the main use of this keyboard will be: fps gaming, chatting & surfing.
I'll give my feelings as soon as it arrives, hope Monday!
Cheers
(Sorry for my english, I'm a 105 keys french layout dude)