Fwiw I’ve used a P50s and dislike the keyboard and track point greatly. The keyboard isn’t as stiff, and the track point feels imprecise. There is much more flex in the frame than older (t450, t500, x61) thinkpads that I’ve used, as well. This is only one datapoint, though, and that particular machine was a hand me down that could have been a lemon.

I’m much happier with the t450.