AZLA Crystal MS. I've wasted a lot of money on tips and these are still the best. The Sedna Earfit lights were great. The Xelastec was my favorite. Spiral dot++'s are great, but I prefer Crystals. I despise foams and foam hybrids. Final E type are good, but I prefer narrow bore much more. Eletech Baroque were a waste of money.
Only tips I have left to try, which could be another waste of money, are those Corrier Brass... Not sure how the stand-off distance on nozzles will work out (if they cause BCD IEM's to stick too far out, then what's the point) or if I will like them... but I'm definitely waiting on a NA vendor or some kind of sale. Not about to drop 70$ on tips (including shipping from Asia) when Amazon Prime has AZLA's whole line-up.