I've got a couple of Flight Decks. Actually, mine are the original version that uses both buttons on the right hood. I like it fine on my single road bike and it's just super on my tandem.

I used to use Cateyes and I'm sure not going to say anything bad about them. I was never enamored with the cadence wire running down the down tube, but I never had any problems with it either. Considering how long I've kept my Flight Decks I feel like they've been worth the extra cost.