i advise u get s2.1m  insteed of GMX,becoz personally i feel the GMX's treble is oversharp and quite annoying,s2.1m have very good treble and solid ,wellcontroled bass.

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Added on September 8, 2008, 12:26 am
edifier s2.1m.  if u can spend more,get altec lansing mx5021 

so far C3 is the most success model in C series,and S330 is actualy =s2.1m,they are sam e.so fast out of stock ? i remember tat last month b4 merdeka there is still a lot in ALL IT,so fast habis ?   

C3 compare to s2.1m is it ? well,in my opinion,s2.1m is better in terms of satelites and bass,if u wan the best sound quality among these 2,s2.1m is the right choice,u definetely wont regret   ,if u not trust me,u can go lowyat compare them side by side,the different is very obvious  
the C3's external amp very attractive is it ?    sound quality more important 

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Added on September 8, 2008, 10:44 pm

so far sub RM500 I only played s2.1m,klipsh promedia and mx5021,and they are pretty good,klipsh's treble too sharp,quite uncomfortable for me,   of course ,u may go try other model

below is my opinion for altec mx5021-->decent satelites,very powerfull bass,every thump goes deeply into heart
                                edifier s2.1m---->very good satelites,powerfull tweeter combine with well controled woofer
good things of course will recomended by ppl   creative depend on wat model la,their low end and mid range such as i trigue very bad if compare to other brand's speaker in same price range.