Buddy, buy a used tank. You wouldnt believe the values you can get. I run a store and always get used tanks in for trade. I have sold some tanks for killer bargains, only because they took up space. Geez, take a leaky tank and fix it. I fix leaky tanks (non cracked panels) for a few cents on the dollar compared to what a new setup would cost. I have been in the hobby for years and know that a used tank is smart.
Glasscages make good tanks for the most part. I had a large one from them that had a seal problem, but I could fix it once I took down the tank.
Seriously though, talk to stores (even PetsMart) and see if they ever have used tanks. I have bought tanks from retail stores like PetsMart before during inventory or replacement times. Keep looking on CraigsList as it is FULL of stuff, even if it is a little drive.
If you really get stuck, let me know and I can see what I can do for you. I gave away tanks last month for space, and clean out my storage about once a month. I get tons of used tanks and equipment in and some doesnt sell and I dont really want to keep all the stuff around for a long time.
One thing is for certain though, you need to break up that tank.