I use about 500MB/month, and this didn't change much when I switched from an iPhone to a Nexus One. This is usage from two email accounts, a lot of web surfing

I use about 500MB/month, and this didn't change much when I switched from an iPhone to a Nexus One. This is usage from two email accounts, a lot of web surfing, and maybe an hour or two of streaming music via rhapsody or pandora. This past month however I did enable tethering on my N1 and ended up using closer to about 1.2GB on my last bill. I can see one benefit to the new price structure. My wife, who just uses her iPhone to look at maps and mail, only does maybe 100MB/month. If not for that she might want to switch to the iPhone 4G and who knows how data intensive it might be (may be worth it to stay grandfathered), we could save $15/month on by cutting back to the $15/200MB plan for her line. Even if she goes over that by 200MB we still would pay less than with the current data package.