a lot of people hate the line6 stuff and other modelers because it's not real. and that's a valid point.
that being said.
after a day of working with my guitarpoort downloading patches, making adjustments, and saving some settings.... I love it!
As far as home recordings and demos, it's great. I get compliments on the guitsar tones on my records all the time.
But you have to put as much time into it as though you were setting up your amp, adjusting the knobs, positioning it in a room, selecting a mic, and adjusting mic placement. all of which you can emulate with the guitar port.
also for the price it's a pretty fun practice/headphone amp.