along with Word, DTG is able to do all of that with Excel and Powerpoint as well. in Excel you can create macros and algorithms the same was as you do on your PC. it's fully functional. i have run into some limitations with powerpoint, but that's understandable with the limited space/processing power available ...
as far as being buggy and freezing on my treo? i only have the problem with a few 3rd party softwares, and when someone tries to call me right when i'm making a call. otherwise, i don't have enough problems to complain about. every mobil operating system freezes up on devices like these. compare Palm OS to windoze, and you'll see that Palm is def more stable.
i'll agree that Palm has been pretty stagnate over the last few years, but i still think they have a better OS than microsoft. but HTC is def producing the best hardware today.