Garmin just released the new 67i model. I've been using the 66i for the last four years and it's been great. The biggest change between these models is the increased battery life of the 67i

I tried it head to head with my 66i to see how it fared in the real world. Initially I left them both on with screen brightness set to 50%. The 66i lasted a little over 24 hours. Then I put them in Expedition mode, the 66i lasted about a week