Don't listen to the people in here. They seem to want to justify their purchase more than being truthful. I've had 4 NCASEs throughout the years and can assure you they scratch very easily. I actually sold 3 of them precisely because of the scratches, and even the latter I sold had scratches and marks.
Like you I travel a bit, and I also found myself changing specs in my case a bit (I had to experiment a bit and forth to find the most optimal set-up in terms of fan and noise, for example). And man did the NCASE scratch by the smallest touch to another hard material. Especially the black one, which was one of the reasons I stopped using it alltogether. The silver scratches just as easily as well, but it's not as glaring as the black one, as the silver is pure, uncolored metal.
I ended up being extremely careful with my case, treating the panels csrueful like they were explosive material, and even attached a ton of rubber bumper sticks on my last one as a precautionary measure. Didn't prevent it from getting scratches though, as there would always be that one time when a drinking glass, the headphones or something else touched them enough to scratch then. That one time I took one NCASE build to a big LAN event was the worst.
I even bought a ton of Plastidip as a plan to deal with scratches, but the Plastidip look was bad. Its removal was a huge pain in the ass as well (mostly due to the venting holes, where the dip got in between).
None of this would have been that big of ab issue had SFFLabs sold the panels for less than bloodthirsty prices. That way you could always have new fresh backup panels, and not worry about your current ones. With the success and growing sales of NCASE, economy of scale ought to have at least made these cheaper to manufacture. But I guess the company want to pursue even higher margins instead...
I can't comment on the Ghost S1. But it'll be my next build (I'll receive one in 3 wreks), due to its, imo, better look, as well as being substantially easier to build in (in that area, the NCASE, like ITX' in general, is a pain in the ass). I'm kind of excited about the new NCASE revision as well. It's still a fantastic case, both aesthetically and in build potential (its cooling options for CPU and GPU make it, if you choose to, the most quiet SFF build).
Everyone is free to have their own opinion, but saying those of us who take care of our nice things are trying to justify our purchases is a bit much. It sounds like you are just rough with your cases, which is fine... not everyone treats their stuff the same way... but don’t discount what the majority have said b/c it doesn’t align to your own experience.
With that said... if you scratched your entire M1 collection, you will 100% scratch your Ghost. The anodization is subpar at best. Also, if you travel with your case as you’ve said... the Ghost is much heavier than the M1 if that’s a concern for you.
For those who read this with inexperience in either case... they are both a dream to build in. I honestly don’t know how one could have struggles in either unless they didn’t plan accordingly... and in the SFF world... you need to plan.