I like my lousy little combo a lot! I've never used a rig, rack, thingamabob, or whatsyawhoszit that so many of you guys use. The Behringer is very fine for me. I think it's because I've grown to it.
I play a Hartke Kickback Combo 15 at my church, but I think the Behringer has my kind of tone. Of course, the Hartke has a lot more power (It's well over 100watts, I think. My behringer is a measly 60 ).
It's very good on lows and highs. Right now, I only have an ESP B205 and an ESP B304. The B205 can get really nice Primus sounds through the Behringer and the B304 can get really, really thumpy bass.
However, the only drawback I can think of is that it's huge for such a small wattage. This beast is somewhere around 12" x 16" x 22".
I hope I helped in describing it to you. I'm not that much of an expert in terms of precisely discerning tones and pointing out the naunces of sound.