Ermmm RM750 a year ago...got it from JB...the seller said warehouse sale...dunno....

Anyone pls tell me which to choose, i have three subwoofer speaker in my mind (altec lansing fx 4021, edifier S2.1m and edifier c3),i had tested all these three speakers, but not sure to buy which.
Altec lansing fx 4021
pros
Sound quality is good(clear than edifier s2.1m and c3),
bass is not bad (the performance is between c3 and s2.1m)
Cons
No warranty for all alter lansing subwoofer speakers if distorted.
Edifier S2.1M
pros
Excellent bass performance(best among three)
Warranty is still valid if distorted(edifier)
Cons
IS not clear if playing a slow song.(worse than the other two subwoofer speaker)
Edifier C3
Pros
song is not as clear as alter lansing fx 4021( but still acceptable,better than S2.1M in this field)
With remote control
2 input
Amplifer
EIDC (prevent sound distorted)
Cons
The bass is too low
Song is not clear as altec lansing fx4021.
I usually use my subwoofer speaker in listening song, and gaming.
I do not need too much of bass, but the bass of C3 is too low. Altec lansing fx 4021 has the bass level which could satisfy me. Edifier S2.1 M has the most excellent bass compared with the other two.
I intend to buy altec lansing, but there is no warranty if distorted, this is why is still doing the consideration.
The bass of s2.1m is fantastic. but not clear, i try to play some slow song, but some instruments sound can not be listened clearly, and it is the weakness when i listening to slow song.
Help!!!
I want a sound-clear subwoofer speaker , and bass level in the middle level??
which should i choose.should i choose altec lansing??
Quite confusing of the word u use...wat means by "if distorted"? Sound will distorted if the bass level or the volume set too high, sure no warranty...
Confused on this sentence also...."Altec lansing fx 4021 has the bass level which could satisfy me. Edifier S2.1 M has the most excellent bass compared with the other two"....really don know what u means, for u, which subwoofer produced the bass u want?
Actually in this class of speaker u need to compromise between Good bass and clear vocal, and usually u need to adjust the equalizer to get the sweet spot of the speaker....
For these three speaker here, i had listened to the Edi S2.1M and C3 before...i vote for S2.1M....