haha ic...i m 20 plus working full time in senq TV hifi department aiya when u reach my age time,,,there will b better speaker than s730 liao this kind of technology no need 2 chase until so hard one...u still got long way 2 go so just chill wey
budget i can simply tembak my speaker model 2 u if u want

because if i compare it with a E3100 still E3100 wins, (in terms of sub only!) but to make it clearer, put S530D on low volume...

u kno wat i mean, each time i audition speaker, i walk away from the speaker 1-2metres, see whether it shakes me anot. E3100 sub capable of doing that.

well then you have to find speaker which has good midrange. subwoofer E3100 should be good enough. if u have M3300 its even worse.
u may want to try the new MX6021 or MX5021. even though they are not excellent, should provide value-for-money sound.

the other day i tested S530 and S730. definitely S730. S530 bass is too muffled and high. it doesnt go deep enough, perhaps at 50hz it bottlenecks already. S730 would be lower, but a sub that big should be even lower.

if u can find S2000V its a good one. i love its mid and high. too bad its rare. and there is S2000 which is better with external amp.