There are tons of places to buy them online, but I prefer www.bigalsonline.com
That's where I bought my Cascade 1200. It's a lot cheaper than the lfs
. I prefer the Penn Plex Cascade brand over any other. It's a relatively new brand and not too much people have experience with them but they are SO easy to put together. It took me about 15 minutes and it was the first time I'd ever put one together. Basically you just clean it out with water, put the baskets in the canister filled with whatever you want, pop on the top, connect hoses and put the hoses in the tank and wah-lah. I didn't have any difficulties with priming then 1200, but the 1000 we had to fill with water first, then start the prime. I don't see too many people recommend this brand, reason being because it's still new and some people like to stick with what they are used to. But I LOVE it.