We were at Cabo last Halloween and lived it so much we booked it again for this Halloween. The resort is beautiful and while the days aren't as hard core partying as TTR the nights there were a blast!
We've been to both and Cabo is worth doing once. We were there when it was Temptation and had a Desire takeover for Halloween 2011. Now it's Desire and there will be no singles there. So if you want to party with singles, you'll need to go to TTR Cancun. We are looking forward to Cancun in October again!