I got my DT25 just over a year ago, and have had to have it repaired multiple times. It kept blowing tubes just a few weeks after putting in a new set. I had it retubed at a local tech's shop once, and the second time I had it sent in for a warranty repair. The tubes blew a third time and Line 6 replaced the amp with a brand-new one! They paid shipping both ways too.
Just wanted to post this in case anyone has any qualms about Line 6's customer service. I've had to contact them a few times over the years, and they've always taken good care of me. I know some people who refuse to buy Line 6 stuff because they've heard "horror stories" about its reliability, so if you're one of them, I say don't worry.