$1,500 phono upgrade worth it?

I'm having the itch to upgrade my phono stage. I currently have a Rega P6,  Ania Pro cart, and Rega Fono MC stage. I find that the stage is generally pretty noisy with a noticeable hiss. The table can't be grounded in stock configuration from Rega, so I don't think it's that. I do have a dedicated line run from my panel to the plug. I don't think it's picking up any interference. The phono is run into a Primaluna Evo 300 integrated; which is dead silent when streaming.

I guess what I'm trying to figure out, is the $1,500 figure going to make a noticeable difference? Do I even need to go that high? Given my current configuration, I can't see stepping up much higher than that. At some point I'm only going to get so much out of the ancillary components to justify going way above them with the stage.

Any advice is greatly appreciated! Cheers and happy holidays!!