Hi, bought my partner a german i5510, we're in NZ
Took a while to get WiFi to work but reserving a DHCP IP for the phone and resetting the phone fixed this and it now works perfectly.
The default email program just doesn't work at all with her imap and exchange accounts. It will connect to the server but return and say incorrect username or password. Put K9 on it and the IMAP account works but the exchange server is 2010 which K9 won't work with so put on improved email which the exchange account works with but not the IMAP account...very frustrating
Also cannot get her MMS to work. Internet APN works fine but MMS doesn't, also very frustrating.
I bought myself a HTC desire Z at the same time, we both like having qwerty sliders, not a single issue with my phone.
Hoping they roll out 2.2.1 soon to see if it fixes her problems.
As for battery life, change the sync scheduling from push to something a little less intensive like 5 or 10 mins, this helps, she gets just over 2 days use from her phone.