>>302805131
All VR lenses are incredibly fragile and easy to scratch, but they are all wipeable using microfibre cloths. Just read guides on how to carefully clean lenses and you could really go for any headset. Ideally though I suppose you'd want a headset where the lenses are further away so you don't get gunk on them, but that means you'll have less FOV. Maybe an Index since that has a slider to move the lenses further and closer.
On top of that, you could buy prescription lenses (you could even buy them with no prescription) which go over the top of the proper lenses, so even if you do damage them at least you're no damaging the irreplaceable ones.