ive had my 1x15 for about a year now i think, and have had a lot of learning experiences over the last few months. i thought for a long time that this speaker was going out, distorting, and i hated it, but voila, new battery in my bass, and the distortion is gone, and i can finally get the potential out of this speaker. to make a long review short, its very solid and clear sounding, has a bit of low mid oomph, that goes great with a little boost in the low mids. the highs are good for a 15, but not as bright as i like from 10s. but they are very sufficient in most situations. the tone is mostly whatever you want it to be, i get great piano tones from it with a little boost in the treble, and i would continue t say that bottom line, its very flexible in your tone choice. i have gigged this a few times for smaller shows. some church gigs, and a small concert, and some backyard parties and such. it has never failed to cut through the mix, and even over powered a marshall half stack, i had to turn down, this speaker has carried its own. its very portable, and very flexible in tones like i said, so overall, this cab is a good buy, ive always used it alone, never paired it with 10s, so i cant say its a great addition, but its a good start. i havent tried avatar or most other cabs, but for the money, this is a great deal for the bassist on a budget.