I have the CDM-8600 and am pleased with the RF performance, sound quality, size,battery life. But it has some annoyances like: No audible beep for a missed call or message, horrible UI and search in the phone book, and a few other things. I have 3 days left in my trial. Does the VX4400 have: Good voice clarity on both ends? Good battery life and RF? How about dropped calls? The Audiovox would hold on to calls where my V120e would drop consistantly, this is very important. Audible beep for missed calls/voicemail...every minute. Thanks for your help.