Matching pex tools, rings, and fittings?

I'm installing a water softener in the garage. The house is plumbed with PEX pipe and crimped fittings. Here is my question:

I bought pex fittings and rings from pexsupply and figured I would just rent the crimper and buy the pipe locally. Is this a bad idea? Do I need to use the same brand tool, rings, and fittings? I don't want any leaks down the road, but at least this will only be in my garage. Any advice is much appreciated.

as long as they are compatible with what you have there should be no problem...

So as long as I have fittigns designed for crimp rings, it doesn't matter which crimper, rings, or fittings I combine?

The only difference, if there is one, would be the go/no-go crimp diameter might be different. It's safer to keep the fittings/crimp from the same place. Probably doesn't matter that much with the pipe. This is all speculation on my part...