I don't remember a "best day", like isn't everyone more or less still learning and progressing, barring injury or adult life taking up too much time for it? I mean I'm 26 now and I keep having better days and learning the next set of tricks while i keep improving my old ones, and I'm excited to keep having better days, I'll land a front 3 on flat soon enough.
And I feel like my curiosity and urge to often change up and experiment with my set up helps to keep things fresh and I dunno, makes learning more fun. I'd hate to get stuck in a rut skating a set up for years without much or any variation.
One of my favourite set ups though was an 8.75 XEN board with thunder mid 148s and 58mm 99a spitfire radials, had a nice mellow flat low feeling for such big wheels. The only difference in what I'm skating now I is that my boards 8.5, the trucks are 149s and the wheels are conical fulls, I want to fuck around with my bushing set up again though, use 2 soft top bushings with or without the washers so I can get the nut down further or maybe swap out for a shorter kingpin and still having the medium looseness I want. There's a lot of variation in turning response at different levels of tightness when you play with the bushing shape, size and hardness combos. Never use those shit bones bushings with the plastic bits on them though they're trash