I have had the 35 Whelen and got very good results with it, I picked up a nice BLR in 358 Win. I am currently working up some handloads for it to take hunting. I don't know why the 35's don't have a better following. Perhaps as the generations age a bit they will find out that big bullets doing moderate speeds knock things over without a lot of fanfare and gun rag writing. I have gone back to the older calibers such as the 7x57,303 British, 45-70, with the 358 Winchester as the relative newcomer. I have most of the worlds hunting covered with the calibers mentioned.
I have had a few of the "new" WSM calibers, I find them no better than the older calibers I have in the gunsafe.