I went from having tons of small tanks to a few large tanks. Right now I have a 210g, a 150g, 3 55g for grow-outs, 2 20g for fry, and a 40 breeder. I like the idea of the larger tanks -- you can keep a decent mixed community of different fish and they're much easier to maintain. I do water changes pretty much every day, so I can't imagine adding any more tanks (though I'd love to). I said if I ever won the lottery, I'd just hire a water change guy and build a fish room. 

