I needed a new SD card for my DSLR so now I've got my hands on a few of them.
Why not throw them against each other and see what comes out on top.
Software used: AS SSD 1.8.5636 Download link [bottom of page]
SD Reader used: SanDisk ImageMate USB 3.0
I formatted each card before the test.
Results: (click to zoom)
32GB microSD Extreme
32GB SD ExtremePlus