i have a fender champion 600. . and for practice it does the job perfectly
it has 2 inputs (high and low) and the high input has a huge sound for such a small amp. . .
if you have a distortion pedal or something, the champ is perfect for cleans
another option would be a fender vibrochamp if your into more vintagey gear or fancy upping your budget. . theyre similar but have tremolo and are older (theyre silverface)
i also have a roland cube.. which is alright but for the price u may aswell get the champion 600.
the gretsch and the champion are exactly the same btw. . .