I tried Ringo 4.27 and had problems with it working. FYI, I have ZLauncher and Beyond Contacts loaded, and was having problems. I uninstalled Beyond Contacts and still experienced the same issues.

I could assign a ringer to the contact, but when that person would call, a totally different ringer would sound. I checked my default sound preferences and even that one wasn't playing!?!?!

Anyways, if anyone has Ringtone Manager experience for the 650 and you can tell me what program and why you liked or disliked, i'd be thankful.