I used Sturmey Archer 8 speed hubs on a few different folding bikes for several years, I think 8 years. Really liked them. I retired the last one when the bike frame broke; if it weren't for that, I'd still be using it.

I have used two Shimano Nexus 8 speed hubs; the first one eventually became problematic... I'm not sure how many thousands of miles that was, but it was well over ten years of use, first on a touring bike, later on my commuter. When it started to misbehave, I replaced it with an old Sturmey Archer three speed (AW) the main advantage of which is that I know how to work on it myself. The second Nexus 8 one is on my current folding bike, and I've only had it for a little over a year.

I like both the Sturmey Archer and the Shimano 8 speed hubs. I tend to prefer the former, but when choosing between the two, I'd emphasize that the hub has to suit the bike. The Sturmey Archer is better suited to a bike with small wheels (but of course you can use it on a bike with normal wheels, if you have a small chain ring).

Bear in mind that IGH's in general require horizontal dropouts (there are ways around that, such as chain tensioners, but I think they're not worth the effort), and most IGH shifters are made for 22.2 mm handlebars. Mounting any IGH shifter on a bike with drop bars (23.8 mm) is a challenge; sometimes an insurmountable challenge.