Rob-
I like the Enaly unit; I mean it works well. It probably isn't the quality of an Ozotech, or something, but heck, I can buy a bunch of them for that price.
I bought the unit with the air-pump built in, so it's nice to have one plug for everything, the dryer is extremely cheap; If I had to buy it again, I'd build one from PVC, and buy some dessicant.
It's "fine" I guess; brings ORP up like you wouldn't believe... Def. glad I have a controller, and if I get a few years out of it, for $50, great...
-Andy