About thunk/thump/punch/etc., I had a set of GHS PW M7200 (44-106) on my CV 50s for a short time. Maybe because it has a thick core, or because it's unusually stiff for some other reason, I noticed a thump from them, a little pulse right after the pluck, not the same as a flat but could certainly stand in. It was more punchy in this way than Roto 66 45-105, for example.
I don't mean a flat's thump (with dissonant components as I understand it) which I never liked. I mean a very brief percussive thing.
-At that time, I wrongly ascribed this to the fact that the SCPB pickup is a little farther forward than a J pickup, and/or because of the single-polepiece-per-string-transient thingy. No, I'm pretty sure it was those strings, as it disappeared with other strings while I wasn't noticing.
-At that time, I didn't yet know that its tone cap was so small, so partly for this reason the PWs were brighter than I wanted and I changed them. (It came with a .047uF. Advertised is .068 I think, and original Fender was .1uF I think.)
I praised Roto 66 earlier (partly because they are not NPS as I opined).
GHS PW (although not SS) are also not plated, so I could revisit them someday.
So, with a bigger capacitor it's possible that GHS PW could serve even better than Roto 66 with regard to this specific topic.