On MobilePlanet.com for $499
The Zayo also has a Transflective screen, just like the iPaq H39xx that I have. But the Zayo is smaller and much faster on benchmarks. Plus it's got a nice metal casing so it's nice and solid. It's got TONS of accessories, including a keyboard, CF Sleeve, GPS stuff, everything, it's all listed there. A 3600mAh extended battery, CF digital camera. I think it's a pretty sturdy and good looking device.
Basically, it's smaller than an e310 and faster than the Loox and has a better battery life than the iPaq H39xx with plenty of accessories.
Oh, and it's got a new generation of IRDA called FastIR or FIR that runs at 4 MBPS
1200mAh built in battery that gets 15-16 hours of battery life because of Asus's SPS technology (smart power saving).