DaveStarWalker
Headphoneus Supremus
As always, synergies and our own physiologyi imported @DaveStarWalker 's canal works tips, tried them, but i did not find them superior to the stock spinfit's that came with the unit. i also bought the w1 spinfit, and they do tighten things up, although to my ears to the detriment of soundstage. i found that the stock spinfits (i think the model is cp145) make a more confortable fit to my ears too, than the w1 do. so the art of tip rolling is a personal journey for shure.
For me, no contest, the Canal Works tips rules. Endgame. Period (see my signature ). All my earphones.
For other people, something else.
Only way to know : testings.
Pure and simple, but... it's a long and hard road to find out what's best for us.