Keep in mind, the people with problems are the most vocal than those who don't. It's like watching the news, it seems like there's a new murder every moment, but have you heard about the countless people who did not commit a crime?
So just by looking at forums, there's a disproportionate slant towards phones with problems.
Unless its getting WPC coverage, it should be fine.
Either should work I believe, I would just be concerned with MMS and Data working right.
If it were up to me, I would get a 930, and considering it should have a warranty, you should be fine.