I,ve had and used the 3M sheets. Good sheets.
I now use what my local industrial supply stocks,not 3M, but good sheets also. Far as I can tell as good as 3M.
If you decide to not use 3M then go to a good truck/auto parts store or a small industrial house that sell hydraulic hose, ftgs, oil , etc. They will have decent sheets also as spills and mess are common and customers need good sheets.
Ask though as you will want oil absorbent sheets that reject water. There are sheets that will also absorb water.
I also carry, use and have used the socks. If the mess is good size a sock or two will pickup and hold far more oil than the sheets and do it quicker.
And yes, I have used them side by side when I had a big mess.