Thanks everyone for your input. I'm going to buy one of these things this weekend. I'm comparing the Spot II (about $100) and the ACR ResQ+ 406 ($287 on Amazon). I like the idea of no annual subscription for the ACR, but it appears you have to subscribe to an optional annual service to "self test" the unit. There seems to be a lot of negative reviews for the Spot II. Does anyone have any experience with the ACR ResQ+ ?
It looks like ACR is also running a promotion on this unit with some freebie gear, for what it's worth:
Edited: Oops, thanks mshields, I missed your post about the ACR unit. Does anyone else have experience with this unit?
I picked up the ACR REsQ this past spring. I had a $500 gift card from Amazon that was burning a hole in my pocket and I got a $50 rebate too. Anyway I dropped in for a couple reasons...I have started taking my young boys on multiday trips so it is added peace of mind in an emergency. In addition, I have started to do some solo stuff again after a 10 year break. My wife appreciates the backup. I have never had to use the device, but I usually give it a test when out and it has always locked and given a good test (quick too). The only disadvantage as has been mentioned is that you have to push the button, but I find that the advantage also. If my wife was relying on an okay or seeing tracks from a SPOT and then didn't, I feel that would be worse for her concerning her peace of mind and making a decision for help. I am happy with the purchase, it is fairly small and light. Hopefully it will be a piece of gear I carry needlessly.