Optimum Car Wax + ONRWW is a pretty sweet combo. Real deep nuba looks with almost automatic upkeep. Since the wax is almost the same in both the spray and wash, they play nicely and you will have no streaking at all during the wash. It is by far the easiest, most effective system I have used personally. You can also step it up a notch and opti-seal underneath for the winter. I like Optimum as a system.
I do love megs 156, very very similar look, IMO it does not get dirty as fast. But the ONRWW doesn't work the same with it. Streaking, and smoothness are compromised. Megs 156 is easily one of the best single products out there, I just love Optimum's system for the wifes car and my parents cars, just too easy for an amazing look.