After having switched from the MPx200 to the i600 because of the far superior coverage of Verizon over ATT, I've grown to like the i600 a lot. In some ways, it is better than the MPx200: the extended battery, the no visible smudge case, the bigger, better lit keypad.
But there are minuses too. The most disappointing thing to me is the missing "automatic" profile setting. I had just assumed this was a feature of the OS and not something Motorola came up with. Why would Samsung not include such a feature. (For those that don't know, the automatic profile swtiches the phone from ring to vibrate and back without intervention from you based on your Outlook calendar. No more accidental rings in meetings. It's a great feature.)
I certainly won't trade the superior signal coverage of Verizon for this feature, but this was clearly a flub by Samsung or Verizon or someone.