What carrier are you on, and how stable is it? I'm assuming the install wipes all data from your phone? Is there a good way to back up your contacts and restore them?
I'm on T-mobile. It's quite stable. It's crashed about as much as the Samsung stock ROM. You can back up your data (most of it, anyway) with Titanium Backup (available in the app store, both free and pro). If your contacts are tied to your Google account, then they're automatically backed up anyway.