Tank Quality ?

[Bartman]

I'm looking to get into a bigger system and I'm just starting to check out different tanks. The dimensions I like are 48x18x20, predrilled. There are quite a few manufacturers out there (Hagen, Seastar, Oceanic, All Glass, IA, etc) and I'm wondering what people's experience has been with some of these brands (or others) in terms of quality. What have you liked/not liked etc. Any comments would be greatly appreciated.