I was on the Summit on it's 10-night Ultimate Southern Caribbean last December and I found nothing wrong with this ship. This itinerary is the best and I've booked it again for 2007 but on the Constellation.
The food on the Summit was great, the service outstanding and the martinis were the best I've had on all the M Class ships.
I'm on the Infinity next April for the first time, then back on the Summit next December for a 14-night R/T to Hawaii, can't wait.
Have a wonderful cruise and I'm looking forward to Hawaii as well.
I found all the M Class ships to be fabulous.