Well, I decided to get a different filter instead. One that has 5/8" ID tubing. I got the Reaction 4 Stage Canister with UV built in. It was inexpensive, has good reviews, used the tubing size I needed, and I was thinking about adding UV to the mix anyway, so I killed two birds with one stone.
Plus, I checked with my LFS and they stock JBJ products, so getting the filter media whenever I need it wont be a problem, I wont have to always order it online.
It's on it's way from F&S, should have it by Friday.
Question though, should I run it in tandem with my current filter for a few days, or just toss a bunch of the media from the old filter into it and just replace the other one?