PDA woes

I love my PDA, my handheld computer. Received it as a gift from my dad several years ago. Well, actually, that was a Visor Edge, and the motherboard failed after a year. At that point I was able to get a hand-me-down Visor Pro, which I was extremely happy about because after three days sans handheld, I was stressing!

Now I'm in a similar but not as tough of situation. The Visor is ignoring the stylus. This started creeping up a couple of weeks ago, but now it's full blown. I can still do data entry in the calendar, addresses, memos, and to-dos on my desktop computer and sync them, but I have to navigate the handheld using the buttons. Time to put a new one on my Christmas list. I wonder what's available out there that's a Palm OS, full featured (no $50 "electronic address books" for me, please!), yet fairly inexpensive. Then, shall I browse eBay? Amazon marketplace? Dunno.

Favorite apps:
1. The native ones (calendar, address book, memos, to-dos)
2. HandyShopper (databases, and I have a TON!)
3. Fitaly letris (popup virtual keyboard)

Any other at-home parents or home-biz owners love their handhelds?

UPDATE: I did some online research, and discovered this is "Mad Digitizer Syndrome"! I downloaded an app that might help, but I also did a hard reset and recalibrated the digitizer. I should've done the hard reset days ago, of course. So far it's not getting weird on me; I hope this is a long-term good thing so I don't pine for a new handheld (any more than usual, anyway!). My favorite amount of money to spend is $0 :)