I'm using it.
Its a neat little device, 2 watts of power and its really LOUD. It has a nice range of modelling amps and good digital efx. 1 nice feature its the ability to have reverb/delay and chorus/flanger/phaser/tremolo effects on at the same time.
I wouldn't comment on the COSM modelling of the various amps but I do wish there were some different ones. For example, the only high gain amp you have would be the Recto setting, the rest when pushed, yield pretty small to medium amounts of gain. Plus, due to the lack of EQ controls (All you have is a tone knob which is still very useful) the models are prevoiced. Recto sounds scooped. Stack sounds thin. And so on.
But in the end, I got it for $157 from Swee Lee and for that price, you can't beat the bang for buck.
Just that nowadays, I don't like the onboard distortion. Using the JC clean channel and pedals.
If you got no cash, get it. Its a great budget practice amp.
If you got cash to spare, give it a pass. You're better (MUCH better) off with the Tech21 Trademark 10 combo. Only $495 and you get real spring reverb, efx loops, XLR outputs and the real deal ANALOG modelling, which beats digital anytime hands down.
Cheerio!
Daniel