10-4 on the spotty SPOT. My hunting partner and I were standing on top of a mountain without a cloud in sight and with full batteries it wouldn't function as advertised. That was a deal-breaker for me.
I just picked up an In-Reach since it is able to send more informative information than the SPOT, but it's too soon to provide a positive review. There will be a few more moving parts to my usual fall hunts this year, so I hope it works as advertised with my Android phone.