Meteor has a good reputation... they do not make everything perfect.... that said, the pistons are pretty reliable as far as dimensions go and consistently good. I wouldn't hesitate to use a Meteor piston in any application. Hyway is a new company, good quality as is some of the Mako line... any of those three are a pretty good buy as far as price goes also. I've had no returns in any of those makes because of bad quality or workmanship in a piston.
Cylinders from OEM makers are chrome... nikasil is the new standard. If OEM were that good, there would be no aftermarket makers. More people use OEM because that's what saws are sold with... if Hyway provided the OEM parts, they would be the OEM standard.
Brad hates anything aftermarket. He did a test of a Meteor 046 kit against the OEM 046 and concluded it was in deed a very good kit producing numbers indicative of the early Stihl 046 saw. Its a preference, nothing more.
Randy loves Hyway, Meteor, Mako and anything that has reliable numbers and plating... shows me he's trying to save you a little money and he stands behind those kits as if it were OEM... no difference. There are some he won't use because he's done some extensive testing... he's trying to improve the market.
Evolution requires change or you become obsolete and die!