I think i should be able to expect follwing:
My normal use:
2G on, 3G only when needed, 10-20 sms and emails a day, 10-30 min phone calls a day, 30 min webbrowsing, a bit of playing. if i have to wait for the train or something like that (max 15 min), push emails on.
Compare to the normal use of other is is quite low. So if the DHD can't run at least 20 hours with this use it's just impossible for me to get it.
If lynxboy is right this should not be a problem with the DHD at all. So it seems the DHD is back in the race.