i settled on a 100pf bright cap on my 1987 lead. the higher you go with the cap, the quicker the volume comes on (lets more signal through initially) so no cap or a lower cap will allow more sweep of the volume pot before full signal and less harshness at lower volumes
I've got 2 amps I usually leave one of them standard 1987 spec but I have come to really love the 5000pF bright cap but i use the amp at very high volume too. I used to really like the 100pF and a few other changes when i was trying for some lead/bass spec hybrid to cover more ground but have learned to embrace the 5000pF cap on the 1987's. Took a while though lol. I realize its definitely not for everyone and especially if you cant turn your amp past 8 on the dial