I have mine at 2000 abralon with polish, woorked the best for me, 4000 with polish went a little too long before hooking to the pocket, often coming in behind the head pin. 2000 gave me the read I'm looking for when playing 5 to ten board with a small swing.
The ball carried better because it did not go down the lane as far, and it wasn't as touchy vs 4000 plus polish.
My T Road Pearl is a condition ball (SKID/FLIP) for me when the heads get fried and I have carry down down lane. I can't go inside because most balls will not recover (due to carry down), but I can go outside and fire it up the 5 to 10 board and get it to slide just enough to get it through the heads.