Steve,
I'm not exactly sure of the range because I use an IR to RF device which gives me pretty much as much range as I want. However, I've heard that the upgrade card to the Palm Personal is a little better that the attachment that pacificneotek sells, so I think you'll be just fine.
Ken,
I just saw that new Visor series. Looks like a great investment. The people you should talk to about that would be the developers of the Omniremote. Their webpage is:
www.pacificneotek.comLet us know what you find!