G9x or goold old Mx518?

RELATED:
http://www.sk-gaming.com/forum/2-CounterStrike/2070795-G9_or_MX518

made my choice thank you everybody :)

heya.
ive given back my razer salmosa yesterday since it wouldn't stop squealin sometimes (the left mouse-button) now im thinking of getting the g9x but the price..hmm i dunno..
my old mx518 was a faithful companion over the last half decade, 4-5 years, a few months ago it stopped working (sc2 n1 nerdrage nearly smashed my new WCG Lcd too, at least it fell down on the floor when my desk broke down -_-), i still have my mx stored under my desk, just cant let go of it (:
anyway..uhm..

g9x..mx518...
or razer imperator (the only one with tight mouse buttons, which dont wiggle)

thanks

ps: simply post the answer i dont need any explanations except for if there is any trouble you are experiencing with the g9x or imperator. there IS no trouble with the mx518 and i shall smack thee liars with my mighty blade..

pps: no roccat, no speedlink i need decent quality pls thank you