GP Sorenson parts always seem to be the bottom dollar if you are comparing. Also the lowest quality. Most of their stuff works OK, just could be better.
NAPA's Echlin brand has always been reliable for me if not quite top of the line.
One engine I built for a truck needed the crank reground. I took it to an engine builder shop to swap it out. They made me a deal on an engine rebuild gasket set so I picked that up too. McCord brand I believe they were. A year later EVERY stinking oil sealing gasket was leaking (valve cover, oil pan, etc) plus the rear main seal. I build an identical engine about 6 years ago with all FelPro gaskets. The McCord set cost about half what the FelPros did. I do not care. If McCord gaskets are free, I still don't want them. Not real thrilled with "Detroit" brand either though I have no specific beef with them.
As far as "paper" gaskets go, more than once have I held a cheap one in one hand, a better one in the other, and I could certainly tell which was which just by feel if nothing else.