I have 2 sets of these and both work just fine at the target speed/latency using XMP profile. They look pretty good and they are small (there are tinier low profile OEM memory but without heatspreaders).
My only reservation is that 1333MHz is the fastest "standard/JEDEC" speed; if you have the BIOS set to Auto, you may find it runs at 1333 only. This is the case on my Intel board, you may expect it to use the XMP profile in Auto but it does not. You need to explicitly tell it to use the XMP profile and run at 1600.
I have other modules with 1600 in standard/Jedec and these ran at 1600 in Auto without choosing XMP profile in the BIOS.
For enthusiasts this is not a problem, but some people may not know that they need to select XMP profile to have the modules run at 1600. There are probably brand-name computers (Dell, Lenovo) that do not have such a setting.
NB. Blue/Black version are 1.5V rated; the white ones are 1.35V rated but not all boards may allow you to drop the voltage; many alow you to increase it over 1.5V but not decrease it. Doh!