Great build quality
The glass is thick, and the sealant on the one I got was top notch. I'm really impressed with the quality of the 5E. I didn't get the bulkheads, and kind of regret that as I haven't found any that fit perfectly yet, but for my use that's not really important. It comes with a self leveling mat, and it appeared to be a little small to me though you could also say it was just perfectly cut, and I like just a little bit of overlap in my mats. That's also not that important, since the glass is very thick, IMO. There were zero flaws in the glass, and none of the edges were anything except perfectly smooth. Shipping was fast. I had my tank in less than a week from when I ordered, and that was on a weekend.
Carl