I recently tore a couple small holes in my brand new parachute double from GT, so I emailed them for any kind of advice or help they could offer... Just got an email back saying they will send me a free single! I think I'm gonna still try to repair the double with Tear-Aid, as I've heard this should be fine for small holes... But I am so surprised that they were so happy to offer me something that they really had no obligation to. I was completely honest and explained that it was my negligence that damaged the hammock, and yet they still offered a replacement.
I have a (very short) mental list of companies that have helped me out like that (Kelty being another one on there) and I never forget it. I will be singing their praises for a long time now!
Just wanted to add this here for anyone considering a purchase, I'd say you can't go wrong with GT!