USPCC only has one roll of paper "stock" at the plant. But it doesn't mean all USPCC cards feel "the same." The printing process adds variables each time. Even a gold standard deck printed 3 years ago will feel different than one printed today.
But, USPCC has consistently shown their card quality as a leading card printer. Back in the day this question had more relevance when there were a lot of garbage decks on the market, but now with the rise of the hobby and the competition between companies - most decks people "chose between" feel great.
The only time you need to ask about card quality - would be from a printer "you've never heard of" or when you don't know who made it.
Even MPC (who is based in China) is now printing decks that rival USPCC and Cartamundi.
As long as you own a deck or two from Taiwan Printing Company (who makes Experts and Legends) USPCC, Cartamundi, and maybe KEM, you'l always have a basic reference for how their cards feel and brand.