All them "Gator Bites" and "Shark Bites" around here are $7 to $12 each. Why not just get a pair of $50 crimpers and use the $1 fittings instead?
I do in floor heating systems in some of the houses I build, and press on connectors will not pass code in my geographic area. There for I just use the crimp on type for fresh water and heating systems.
Coming from someone who works with plumbing at least once a week, pex is such a god send over copper. Takes about one quarter of the time, no dangerous fire, and no toxic fumes.
Posted for educational purposes only.