I just received my package from Cheapestnatostraps today all the way from Sweden.
On first look it seems like any ordinary NATO strap, but after wearing it and on closer inspection, there are some key differences to look out for:

(Looks kinda similar from far except for the nicer buckle and brushed finish on Toxicnatos)

(You can see the Cheapestnatostraps use standard hardware which is rounded and has no edges. Toxicnatos win on this one. The sharper edges and brushed hardware is a winner with tool watches)

(Glued vs Stitched. Toxicnatos win again.)

(The additional stitching on Toxicnatos ensure the middle piece of hardware is stiff and does not swing loosely)
Pricing wise, almost the same if you don't purchase over 5 straps from Cheapestnatostraps and get their 20% discount. But quality wise: Toxicnatos is the clear winner.
I guess I better put a disclaimer to say that the above is based solely on my own opinions and that I am not professionally qualified to be cited on the quality of NATO straps. =D