the WORST compressors i ever used are the behringer composers,
ehm, is it normal that you have to set the treshold at MINUS THIRTY to even see ONE DB of gain reduction? ! (yes, i'm shouting those words in capitals...REAL LOUD)
all the buttons start cracking if u use the unit alot and ehm,,,,the overal sound isn't amazing and these units barely work in my eyes, or ears,
one step up is
a samson scom, looks better, works better, but i hate to use lots of compression cause it kinda sounds like "THIN plastic" to me,
and i don't want plastic drums on my cds...
they're OK to try avoid clipping, but use the compression in moderation,
besides that i got a dbx 166a which has a darker sound i think, i'd call this unit a little better than the samson,
then i got a dbx166XL which works alot better and cleaner,
i constantly use this one on kick and snare, you can really hear the compression but it doesn't sound that ugly, so i'd recommend this unit as a first compressor
dual channel or stereo, balanced ins and outs, its got a gate and sidechain, enough to play with it for hours,days and weeks
another budget thing i got is
the TC electronic triple c,
stereo multiband compressor, cool toy, sounds clean, its got spdif out, did some nice tests with it, its a bit weird to use since its a digital compressor, with presets and all, its real easy to get "different" sounds with this unit,
its got a lovely BASS and TREBLE controll which makes you adjust things real quick... only thing i don't like about it is that it can sound a bit .... clean...without real character, you can make it PUMP music, but it doesn't pump hard... i think you can tell that its a digital compressor,
its not dirty enough for me...
then there is this Joemeek vc8 i bought for pretty little money,
its a preamp, not just a compressor, its got EQ, phantom power and even opto distortion...
opto compressor, vintage kinda compression, one button for presets and "how much compression", which is treshold and ratio together (if i'm correct), this machine has its own sound, i like that, its got a soul, a little spirit, i've used it on vocals, drums , bass and definately guitar,
it doesn't offer lots of controll since you're using 5 presets, and the EQ is a bit weird, specially made for guitars, lowest frequency you can tweak is 150 hz !! but i like this machine, its one of the only units i'm not gonna try to sell this year... i think you can find vc6 machines for 'cheap' on ebay, allmost the same thing i think.
my conclusion, stay away from the cheapest stuff,
cause once you know how to work with it, you might start to hate it and sell it for little money...
its REALLY worth waiting a few more weeks or months so u can save up some money to get yourself a "decent" low budget compressor, something with character, like an old dbx160 or 160x, a joemeek, at least you can be a bit proud if u own these units,
behringer compressors digust me, since i know they will stop working after a while, and while they do work....HOW?????!!!!
my two cents...