In the past I've kept reefs and a macro tank or two, but lately I've been drifting towards FOWLRs. Mainly just because I'm living in an apartment where I can't hook an RODI unit up, and buying jugs of distilled was getting expensive, even on my pico tanks.
I read through a bit of your reef thread, and it looks awesome! I'm strongly considering picking up a Lifegard 4 gallon tank and setting it up with a clown goby and some softies on my desk. Yellow Clown Gobies are just so, so fun! I may go to a store today and look at tanks, lol!