How can noobs like me assess how good any given POS is? Is there a rating system? Any way to inspect transactions to see the whatnots? Knowing nothing, I've

How can noobs like me assess how good any given POS is? Is there a rating system? Any way to inspect transactions to see the whatnots? Knowing nothing, I've been doing as much as possible using Apple Pay, because IIRC they do some kind of token exchange, vs sending my digits across the wire.