ako rin po newbie sa audio setup...

i plan to buy seps for the front speakers of our MZ3-S...
what do you suggest na brand na mejo cheap(tight kasi budget) but ok naman quality that would fit sa mz3??

do i need to buy an amp pa ba?? or kaya na ng stock HU ng MZ3...
gusto ko lang sana to have a clearer sound system...
TIA...