In reply to Patch Thomas:
Thanks all for your useful input,
I've decided to go with a MIPS helmet as it seems clear it is safer than non-MIPS (though all do not agree on the degree to which safety is improved). As ianstevens mentioned, I may as well if I'm not bothered by the price.
Neuromancer, I watched some stuff on the Vtech safety testing you mentioned, and the impacts they simulate when testing MIPS, to me, look very comparable to rock climbing falls.
I have recently discovered that there exists an EPS helmet with MIPS - the Mammut Crag Sender. So regardless of what foam I go for, MIPS is an option.
As vscott mentioned, all these helmets meet the same safety requirements, so I guess if I take good care of my helmet, It makes little/no difference what foam is used in terms of safety. Supposing they all fit well, I could justify getting the Crag Sender, as I would imagine this has a lower profile, being made entirely of EPS. Or alternatively just get the one I like the most when trying them on.
Please correct me if I'm mistaken about any of this.
Any thoughts on which to get; Cragsender, Wallrider, BDvision, (or other MIPS helmet?)
Thanks again, hope this thread isn't already dead.