"Upgrades" are always hit or miss...
Went through all the various Seymour Duncan A2 humbuckers on my LP and various semi-hollows, until I got tired and settled on Pearly Gates in my Epi Dot and Seth Lovers in a PRS SE... pero depende pa rin sa amp.
Extensive pickup swapping and tinkering on strats as well, only to find out the stock mij were good as is...
Put a neck mini-humbucker on my micsis tele, only to realize I missed the Texas Special I originally had installed.
Lots of OD pedal acquisitions, only to realize I didn't need the bowteeks and was still happy with a pair of Visual Sound pedals.
And I still miss the various small tube and ss amps I let go in the past for supposed upgrades. Found out I didn't need the added headroom and volume.