Plus 1 for just ordering a unit from Buckeye. The concept and materials are all pretty much exactly the same. Try to avoid Kent as their older models used to have a proprietary system, you can't just use any old filters. I'm not sure if they've changed that.
I'm running a 300GPD unit from Aquafx, a Mako with upgrades. 1 sediment filter, 2 chloramine filters, 3 100GPD Dow membranes, 2 DI canisters, plus gauge and dual inline TDS meter. Sells for about $500 new on their site.