Between the two, I'd probably go with the Line 6. Based on the two amps, I'm guessing that you budget is around $300.00 or less. For a little more money, you could get the Crate V 18-112 (18watt, 1 X 12 tube amp - $329.99 @ Musician's Friend). I think your son will get more out of the Crate, and don't be fooled by the relatively low 18-watt rating. If you want to go solid state (and ther are some nice ones out there), check out the Peavey Bandit 112 (80 watts, 1 X 12 - $299.99 @ Musician's Friend).