I have both the spot connect and a spot2. Personally I don't like the spot connect. The reliance on a cell phone makes it not as appealing for me. FWIW, you can start the tracking (need the cell phone to do that), then turn off your phone. It will continue to track. If you want to send any messages besides SOS, you need your phone. (you can send an SOS without the phone) The one benefit is you can have several different preset messages that you can send for free, or if you buy a texting package, you can send any text you want. I really like the SPOT2. No reliance on anything else other than having good batteries. You are still able to send an "I'm ok" message to anyone you put in your pre-determined list of contacts at any time. The tracking on both is pretty comparable. The thing that's nice about both is if you are in an area of spotty coverage (thick foliage, steep canyon walls, etc) it will continue to try to send until it gets it out.
If you want to get a SPOT2, I've got them in-stock (silver and orange). I can get the Connect, but I have to place a minimum order so before I order them, I would need to get atleast another person or two to commit. The cost is the same between the two, but the SPOT2 has a $50 mail-in rebate.
If you want to try either before you buy, I'd be happy to loan you mine, you would just have to track it on my profile. We could setup the contact lists to go to whoever you want so you could test sending "OK" messages, etc.