Originally Posted by pvaudio
Indeed I have not. The only Kirschbaum strings I own/carry are PL2 18 and Spiky Shark 1.25. One customer in particular keeps raving about his PL2/Thunderblast hybrid having forever been consigned to synthetics due to TE. Apparently it gives good pop and spin.
Pro Line X should be softer and a bit more powerful than PL2 according to TW.