I have five crinkles I think, 3 black Singer 66s, one brown Kenmore, and an OD green DRESSMASTER. Each has a personality of it's own. All are excellent sewers.
If I were buying a new machine and my choices were the standard shiny paint or the crinkle paint how would I choose? I don't know.
I would not automatically disqualify a crinkle finished machine just because of the finish though. I would have to look at the whole package. And even then if the packages were equal, say like the Singer Mdl 66-16 and 66-18 in which the only differences were the finish, I just don't know. I like them both. I guess it would depend on what mood I was in at the moment.
Different strokes for different folks I guess.
Joe