I plan on using the copper crimp rings to install pex. Are all copper crimp tools the same? I know keep the fittings and crimp rings the same and only use pex that is listed to work with those fittings/rings. But can I use a superior, Apollo, sharkbite, kobalt, viega brand crimp tool with any brand of fittings/ rings? I was want to grab the kobalt as it came with 3/8 - 1†crimp heads and a case plus it is at a good price. I need a tool as I have a big job ahead of me.