Throw: tough to narrow this one down, because I have 6 favorites. However, the Fulvia BTM-R takes the cake for best playing.
Bearing: full ceramic concave that I got with my Evora. Love the simple maintenance and sound of this bearing, wish they were more readily available.
String: YYSL Ammo. Have a bulk pack of Venom on the way though, which might become my new favorite though.
Response: OD flow groove for full size flow grooves in my Sovereign and Stealthzilla. Wish their 19mm pads were a bit thicker. Also wish IrPads were readily available in 19mm. So Luftverk luftpads are probably my favorite 19mm pad right now, hoping JP puts them up for sale.
Lube: dry for my ceramic bearings or the tiniest drop of MFD Gorilius Lubricus for non-ceramics.