How have you gone about upgrading your existing collection

[MCoxon]

Have any of you gone back after amassing a collection and decided to upgrade?

I am a player collector, and I’ve got most of the basic and some of the advanced cards for each of my favorite players. I now notice that many of the cards from early in my recent collecting phase are not as nice as I’d like them to be. Many early purchases are off-centered, and some have poor registration or snow. So, mostly I’m upgrading either one or two grades higher, and sometimes within grade if the card has a much better eye appeal.

I’m wondering how others have approached this, and did you find it satisfying after doing a number of upgrades? I’m wondering if it will be rewarding - would love others’ experiences and even before and after pictures if you’re interested in posting

Thanks,