Where to spend some money?

Would welcome anyone's thoughts on how to spend some money to step up the quality of my vinyl playback. This is by no means a mega buck system, but here is what I have; Rega P-2 with RB-250 and Exact cartridge. I Have installed the Incognito rewire set, machined sub-platter, and an Iron Audio thick acrylic platter. I clean my vinyl with a Nitty Gritty and a carbon brush. The preamp is a Hagerman Cornet and the interconnects are PBJ's. This is fed into a Rotel RB1080 200wpc amp and out to Paradigm Monitor 11 towers. I use the preamp section of a Rotel RX1065 receiver to control processing functions. It does sound pretty good in my opinion, but I know there is more to be had

Where would around $1500.00 to $2000.00 best be spent?

Thanks for your time.