no sub

but may be a good alternative
how many watts RMS ??
$180 is for 2 speakers or it's $180 each ?? because my maximum budget is $200
Don't let watts ratings confuse you - most Multimedia speakers which you mentioned do "tricks" to show high ratings, like 24h life time on laptops

basically playing at their stated max is only possible for very short time AND it'll sound very distorted.
These behringers will produce up max 110db SPL (at 1m/pair) - just for reference Home theater system rarely go louder than 90db SPL and 120db SPL is damaging for human ears...
In addition they play as low as 50Hz - very respectable for relatively small speakers and it's touching the area usually sub play
But you still insist on comparing watts - pair of these speakers rated at peak power 150W for a pair
$180 for both. Ask Zzounds and MAYBE you could them at $180 shipped.
I edited my post to add BIC PL-200 sub, which is over your budget, but unlike subs wannabies you mentioned, actually designed by REAL subwoofer company - HSU Audio