I have a cheap stash myself (IPFs) except for 12 pocket diapers I have for outings and nighttime.
I don't know if I am frugal or what, but it is almost impossible for me to spend money to replace stuff that is working well. IPFs are so absorbent and fit DS so well... only when they were not working for overnight and were a pain to bring on outings did I go ahead and got pockets.
Ok, PFs are a pain sometimes when DS is too wiggly. I even thought of buying all AIOs last week when I found myself reaching for the pokets more and more because DS was just too irritable to lie down for a change. But then, he went back to his old cooperative self and diaper changes are what htye used to be.
I also thought of more fitted and AIOs because of DH a while back .Then he learnt how to pin and is very proud for having mastered the art :LOL
I am looking into NB stuff righ now and actually thought of buying Kissaluvs and then resalling them afterwards. But then again, I am VERY GOOD at pinning and only had bf blowouts twice.
Now, when I have to buy dipes for other people I have no problem buying the fancy stuff. I got some great AIOs, fitted and covers for a friend's baby shower and it was so much fun. As to my own stash, I just can't buy fancy diapers when the ones I have are working so well already... And DS is just as happy no matter which diapers he has anyways as long as they are soft comfy
I do the same with other things in life too I guess. Though I
getting nice stuff for DH, our kids and other people, but it is VERY hard to go ahead and buy myself new stuff becfore what I have is completely worn out.