I really liked the Lomas Trails near Grand Junction (includes the northern terminus of the Kokopelli Trail), and DuPont Forest in Asheville. Anything I've ever ridden in Sedona is fantastic, and the loop at Snowmass outside Aspen was the prettiest trail I've ever been on a bike. But those are all destination spots that I've only ever been to a few tyimes at most. I'd probably want to pick a favorite from among trails I've ridden quite a bit. And even then, it might not be someplace I've ridden too much (like, say, Wiss) because, as the saying goes, familiarity breeds contempt. And as blasphmous as it is for a Philly area MTBer to admit this, after spending the pandemic years riding almost exclusively in my own area, I've ridden Wiss so much over that period that I'm genuinely sick of it at this point. I still go there several times a week, but I find I'm pretty judgey of it nowadays. For that reason, I'd probably go with spots that hit the sweet spot in the middle - places I go to multiple times a year despite the fact that they require effort and (now more than ever) a shit ton of gas money to get to - so like Rattling Creek or State College.