The Shelter is "dry" sounding compared to the silky smooth Koetsu so if that's your cup of tea, go for it. I'm a Koetsu guy, tried to like the Shelter, YMMV.
Shelter 501 Mk II vs Koetsu Black
I did a post some time ago and for some reason it has been deleted. I have been happy with the 501 for almost two years. As I am nearing 1500hrs. on it I am considering a replacement or change. I would be open to opinions from those who have heard both and what you liked or didn't like about them. Thanks in advance.
David
David