Aftermarket Seals vs. OEM?

I have to reseal the boom and bucket cylinders on my CAT 225. I priced out all the parts online via a few different methods:

1) CAT Parts Store via my local CAT dealer. ("High" quality, I assume all made in the USA/West)
2) Online using Amazon & eBay only. ("Aftermarket" quality, some made in USA/West, some Asia)
3) Cheapest prices online via https://propelparts.us/ ("Lowest" quality, I assume all made in China)

Here are the results of the pricing analysis:...

Aftermarket Seals vs. OEM?