I will chime in on this... I have owned a P25 for approx 3 yrs.
The first upgrade I did was change the c/w to an Express Machining "Heavyweight". This improved bass in both weight and reducing a slight muddiness. Also, improved tracking ability on the carts I used it with.
Within the last 3-4 months I have installed the three Groovetracer offerings- Counterweight, Subplatter and Acryllic Platter.
All I can say is WOW! These "upgrades"improved EVERYTHING to my ears.
The Rega strengths of Timing, musicality, and pacing are all still there but now the bass is lower and tighter, the highs are extended even further and NO "hotness" or gratiness, just smooth extension. Soundstage depth is a good 3' to 4' perceived deeper.
The midrange is meatier than before the "upgrades" and more palpable, especially on female vocals- I am falling in love with Joni Mitchell....again.
I paid $600 for the P25, and about $500 for the Groovetracer products. I am currently using a Rega Exact cart, I paid $250 for and a Rega Fono I bought for $200. All told for less than $1600, I could not be happier, nor do I believe I could do better for the money.
The Groovetracer products are first rate in design and build and are truly a snap to install. Doing business with Groovetracer was a hassle-free, pleasure, and I would urge you to spring for the three "upgrades" as your budget allows.
If you can do all three at once, I would do it that way, but if not, in this order.... Counterweight, then Acryllic platter, then subplatter.
I would not trade my table for an LP12 or a Scout....they are both good tables, I just prefer the P25/Groovetracer.
I will probably buy another, more expensive table someday, but I will keep the P25/Groovetracer.
If your on the fence.....jump, you'll be glad you did.