I switched to smashes for mario due to pivot jc upsmash and comboing into downsmash, or usmash off dair... But now I've switched back to tilts with tap jump. Mostly so I can transition from sheik/mario better.
It's only really feasible for me to accurately read/follow DI for fair with tilts on, also the double sticking/buffered upair possible only with attack stick seems pivotal for mario. I just feel like I juggle better with it.
I also use Z-jump, but that's mostly for other characters. It does make sh/fh fireballs and fludd useage better though.
I can still do pivot jc upsmash with tap jump, but only with 95%+ consistency going to the left. About 80% to the right for some reason. Working on it.