I think you win tbh. I had the 13PM, then the 14PM, then the 15PM, and now I'm on the Air, and I've strongly felt that this is the true sequel to that 13PM. That phone ran cool, had two day battery life, and looked amazing with those stainless steel rails.
None of those intermediate upgrades were significantly better phones in any real way. They had worse battery life and other than that a bunch of meh upgrades. This is the first phone I've had since that 13PM that I really felt was an actual new thing.
I feel the same. And the Air much more comfortable to hold for extended periods due to its weight reduction. Also, the 13pro, for me, hurt my hand due to the sharper edges. The Air is so much easier to hold and doesn’t cause me any discomfort at all.