Most mountain bikers, regardless of skill level, should probably be riding flat pedals rather than clipped pedals. If you are, purpose made flat pedal mountain bike shoes are a huge upgrade over regular sneakers. And the Freerider Pro from FiveTen are probably the best you can buy. They are super comfortable, have a nice sticky bottom to help you connect with the pedals, and have some water resistance. I've only owned one pair of these and they're the ones I bought 3 years ago and I'm fairly sure they've got at least 3 more years of life left. I've worn them in everything from 100 degree sunny days in Texas to 40 degrees and raining in the PNW and have never felt like I needed a different shoe. If these ever do wear out, I'm buying another pair without hesitation.