Hi Dave. Old-time Visor flash-adapter user here (homemade and commercial). Good to see you again in the Zaurus world!
Like yourself, I've been comparing various IR keyboards. Thus far I've picked up:
- Micro Innovations MP-0118 (aka Pocketop)
- Palm P10946U
- Targus PA870U v2
- Belkin F8U1500
I started with the Pocketop (Staples clearance). Certainly worth having, but the keys were too cramped and I found the orientation / positioning difficult with my SL-5500.
Next I ordered the Targus. It's still sealed in the original package. I could tell even without opening it that it was larger than I wanted.
Then I ordered the Palm. I'm very pleased with it and it is my current keyboard of choice. Its folded size is a nice compromise between the Pocketop and the Targus. Positioning was easier and I found the key size much easier to use and closer to full size. The Palm does
not have a dedicated number row. This is clearly an issue for you. For me, I prefer the larger keys and will sacrifice the numbers for it. You must type a lot more numbers when you code than I do, Dave!
One oddity of the Palm is how it folds. Very Rube Goldberg.
I picked up the Belkin just recently (another Staples clearance) and haven't had a chance to give it a test yet. I do note that the folded size is almost identical to that of the Palm.
So my tentative evaluation is that Palm is better for those not needing a dedicated number row. Otherwise the Belkin looks nice. Pocketop is the choice if the smallest possible size is your priority.