I have Donic Ovtcharov No.1 Senso, same as Long V (exactly same, to the 0.1mm). For FH i use 40 deg Battle 2, for BH i used Victas v01 stiff and now use Gewo el pro 48. Works like a charm (for BH i might like v01 a bit more. I doubt those few extra fractions of a mm on the core will make a...