I will tell you what - bar none, incredible customer service.
Last Sunday I decided to pull down my Eclipse to detox it from potential pathogens. While it was down, I decided it would be worth calling the company and letting them know about a couple new bubbles I had noticed in the acrylic, as well as a chip/deformity that you couldn't feel from either side that had changed from clear, opaque. (Kind of like when you bend plastic, it turns white.)
NO questions asked, no photos/mailing old tank back, he simply asked me to fax him my Petsmart.com order history for proof of purchase. While I was at it, I told him that the removeable fliptop lid had broken, as well as the little plastic wire cover, and he said to make a note of that on my fax and he'd see if he could find some of those little plastic parts.
When I called back 3 days later he told me Fedex was tracking it, that it would be here on Saturday. Well, I just opened the box. I couldn't be more pleased. Not only does this tank not have one single scratch (and I'm going to do my best to keep it that way), but both brand new plastic pieces also.
They really do have fantastic customer service.
The first tank underwent a ton of abuse during cycling, I hauled it to my bathtub 4 times, replaced the gravel 3 times, etc. This one I'll set up once, and it'll all be good.
There were some other things I didn't do right the first time I set it up, and I think it may not have been level across the cast iron stand bar/rings as well, before I filled it up. This time I'm going to make sure the weight is evenly dispersed.
Anyway like I said, you do pay a little more for these systems, but I couldn't be happier with their customer service and warranty program. I'm so excited... I can't wait to set up my brand new fresh tank, with no pathogens either!