What are you all using for your brackish tanks? I had a 5 gallon cheapo Wally World special and the salt killed it in about 4 months. Most of the self contained "Reef" units of any size are expensive and I'd hate to drop the money if there is a better alternative. I already have too many tanks according to the wife so it may be a moot point... but I don't think anything I have that I could rearrange would hold up.
She'll be a tad bit tense and cranky if I come home with anything else. 
Didn't plan on another tank or fish but we made an impulse purchase and have never looked back. I think it's our favourite tank, definitely favourite fish.