well, i've used their 2 mouse b4.. the quality is my god very lousy.. the mouse i used b4 the grip really suks.. and yea, it does look sucky.. haha..
can't rmb the 1st mouse but the 2nd one still wiv my dad.. the one tat has a free battery life mouse pad.. the mouse is wireless and all and u need to put on their special mouse pad to use it... the reponse is sooo slow compare to my old logitech.. no offense to the A4tech users...
After using 2 of their mouse, it gave me bad memories.. haha.. well,  guess tat's it..
P.S: saw my fren's the trade in mouse X7 smthing, quality also not tat good... the plastic like very cheap.