I’ve been looking at the O2 XDA. I’d like…

I’ve been looking at the O2 XDA. I’d like to upgrade my (relatively) old PPC to a Pocket PC. Reviews here:

• http://www.tekguru.co.uk/PPC_Reviews/XDA/index.htm
• http://www.brighthand.com/newsite/features/xda.html
• http://www.infomaticsonline.co.uk/Products/Hardware/1133643

O2’s details here:

• http://www.o2.co.uk/business/productsservices/xda_index

It looks impressive but I’m a little concerned about the cost of data airtime. I’m also not yet 100% convinced about carrying this around as my phone - could work though.