Good thing you're making sure about what option because i've heard they jam a lot.
Look on YouTube as well and Google for reviews.
I guess the jammkng problem is not so bad on a day to day basis but if for some reason you have to be out let's say for 24 hrs then it'd be unreliable but then again it's a matter of researching well.
" How we behave toward cats here below determines our status in heaven."
- Robert A. Heinlein