Separate PS can definitely improve sound. I would suggest that a reasonable price point is around same as cart, so ~$200 with the 2M Blue. Doubling that to $500-ish may still get you a bit more refinement, thereafter it becomes a question of what else will be the weak link/limiting piece. If you think of ratcheting your system up gradually, you may consider making the PS your best piece for now, then I would suggest something like $1000. Lots of options.
Whether you want to stay MM only, or also leave the MC door open is another consideration. I think most >$500 PS are combined MM/MC (there certainly are exceptions).
Phono preamp upgrade price/performance
Im wondering how much I would have to spend on a phono stage that would be better than the built in one on my amp?
amp - Arcam Radia A15
TT - project debut carbon with 2m blue
so i think it sounds pretty good but I recently tested a different amp (Marantz model 50) and I thought ithe phono sounded better than the Arcam. I didn’t keep the Marantz for a bunch of other reasons, but it got me wondering, how much better can things be with a “better” phono stage and what would it cost.