hi
i've been using the atom for a couple of months now. i must say it was a slow performer till i upgraded it with the ROM patches available on the O2 site.
as far as the battery life goes, i need to plug it in for 20-25 mins every 2-3 days. no issue i guess. it's BEAUTIFUL to look at and i do find people at work giving curious glances towards me and my O2.
i've nearly stopped using the stylus and just use my index and little finger to operate it. its pretty easy to use w/o a stylus(except while text msging).
The listed price at GK-1 in delhi was around 35700/= and i got mine for around 32800/= (with bill and 1 yr warranty).
with the money saved, i got 2 512 mb micro-sd cards(for music and various other obvious uses). havent had a chance to use the wi-fi capibility yet.
overall, i went ahead and bought it even after the sales rep tried to swing me towards other brands.
go for it if you've got the dough. i'm a satisfied user but then, to each his own. you might have a different set of uses and expectations from your PDA.
cheers