I bought one cheap on the FS forum, and I guess it just wasn't for me. Keeping track of which wire measures what was a bit tough. Plus, I work in my case a bit too often to make having all those extra wires running all over the place practical. Navigating the menus with the few buttons on the thing was a bit tough too; some kind of hookup to let it be configured via a software interface could be really awesome though.
As I said though, it could be really great depending on the user's preferences. I'd probably be fine with one of those Compunurse things - just the single LCD temp readout. Of course, I no longer have any 5.25" bays available anyway. DVD drive, CD-RW, HDD (internal 3.5" bays are all full), and a NewQ Platinum Eqaulizer.😀