Interesting amp - considering your other small amps, I'm surprised you went for another. What made you decide on it?
This is purely for practice in the park or late night jams with the backing tracks. Gotta get these songs under my fingers for upcoming gigs! Too much to type, let's meet up soon. :)
Anyway, the Fly is portable (can easily fit into my backpack), battery powered, and has an MP3 input, so I can simulate playing with the backing tracks with minimal setup -- guitar, Fly, iPad, 2 cables, and maybe headphones.