I have never used Kents line of wet dry's, though I do own several of their products and I really like how their equipment handles. If money isn't an issue with you, check out
Lifereef. Even though they specialize in salt water setups, you can easily customize your own sump. I hear nothing but good things from them.
If prices do kick you in the face, do a search on eBAY using the key word: wet dry. There are a ton of vendors selling on that site, which is great b/c it drives the prices down.
Another decent line is the Amiracle series. I currently own the sl-150 model and it's doing the trick.
Amiracle
If you decide you want to make your own wet dry, check out this site for parts
wetdryfilter.com. There are also a ton of DIY sites on the net for making one.
Steve