NATO straps are great if you like the industrial look. Phoenix and CWC do the bread and butter basic NATO very well. Phoenix are thin, robust but do fray and show wear quite quickly, the CWC versions are better quality in my view while retaining the same design basics. Eddie's TF Natos are well regarded too.
There are cheaper options and many more expensive choices too. 'Seatbelt' type are considered a more luxury choice, smoother fabric and generally a bit thicker but I've had mixed results with the pricier options and prefer the basic straps.
There's a rabbit hole just waiting to be dived in to..........