The MX-450 macros are easily programmed and you can see them on the screen. It is superior to the remotes you have on your short list. Despite the non-PC factor it is actually more cutomizable than the other remotes and proboably will give you a much better RF response if used with the MRF-350 or 260 units. Also, as an added factor you can purchase URC lighting down the road and have the ability to control your lighting wirelessly. All you have to do is replace your current dimmer with the URC/Lutron dimmer and your good to go.

I know budgets play a big role in our decisions, but it is not a big difference in price. If things are tight I suggest you save for the better option.

Good luck,
Vincent