I'm going to be picking up a 46 bow tank this weekend, and getting back into the hobby. It's been 18 years since I've had my last tank (an 18 gallon tall, which I don't think they even make anymore). I was going to go with a 29 gallon or a 55 gallon (I keep deciding upwards!), then I saw a 46 bow and REALLY liked the looks of the tank. PetSmartPlus has the tank, hood, and stand for $299 right now.
Two things I really like about this tank.
1) The hood that comes with it. It seems the back has more room than a standard rectangle hood. So an Emperor 400 or something seems to have more room without cutting into the light area. Of course, I'm still debating on either a canister or the Emperor for my tank.
2) The dimensions are really nice. A 55 gallon is bigger, but the front-to-rear depth is nicer on the 46. I didn't want a real tall tank that had no depth to it. Just something about this size made me feel it would show off the fish nicely.
So now I need to start deciding on my filter choice. I'm going with angels, neons, etc - calm water species, and probably not much in terms of real plants (I dislike snails). I'm down to the Magnum Pro 350, Emperor 400, FluVal 304 and the Elheim 2216 (this one is some $$$, even at BigAls).