not as many as the guys here. I have a Pronto TS-1000, and a Harmony 768, I had the Harmony 745 before it had a name, but when the 768 came out they offered an upgrade package and sent in the 745 and some $ for it. I was thinking of getting the TSU-7000 (worked with a few of them at work) soon, but was downsized a bit under a month ago so luxury items like remotes are off the list for now.
if you wanted mythical remotes my answer is above, for real remotes
money- One for all remote: can't beat what it can do for the cost configurability - Pronto or HTM MX-3000: can't beat a touch screen that let's you do what you want ease of use and good help - Harmony: most is wizards, the rest you can call or e-mail their help desk all around - HTM MX-700/800: LCD means that you can name buttons correctly, never used them but no one is complaining about them being hard to set-up
I would not buy a remote that does not come with a cable and PC SW except if you can get a cable and PC SW from the manufacturer or a third party add-on