the i930 and i920 are good if you are:
1) a business person who is on the go and needs to access his/her contacts, while performing small tasks in excel, word, and other microsoft products.
2) a person who travels internationally. Both phones are the only phones that will work here in the US and internationally since the i2000+ was discontinued.
Draw backs are: Heavy, big, slow, different interface than standard Iden, poor battery life, hard to get fixed, ir port and not bluetooth, it was top of the line 4 years ago when it was slated to be released.
I870, i580, or the i880 are much better choices. If you are struggling because of system issues maybe hold out a few more months for the ic902 Sprint/Nextel hybrid.