It's a common debate on UKClimbing.com. Which are better? DMM Walnuts or Wild Country Rocks? Each brand will have their hardcore devotees who will swear that nothing compares to their chosen brand of nut. However most will settle in the middle and simply carry a set of Rocks, and a set of Walnuts. But it's not an either or, and I recently got a set of Metolius Curved Nuts that you can pick up for around £70.00 at most gear shops. How did they fair?
First, what do you get for your £70?
The first thing you will probably notice when you get them out of the box (or indeed look at a picture of them) is their rather unconventional shape. At first glance they seem to have taken a huge step back to simple 'V' shape wedges, however looking at them reveals that they are tapered like all other nuts, however the direction of taper is at 90 degrees to the norm of Rocks or Walnuts.
Are they any good?
Well, I've had mine for about a year now, and overall I'd say yes, they've served me really well. I'll get the down sides out of the way first
Due to their general "flatness" (i.e., they are not tapered bottom to top) they can quite easily be unseated by pebbles on gritstone. This isn't a major issue and placements are generally pretty solid, but I have found myself thinking on a couple of occasions "I wish this was a bit more curved". I suppose a good analogy is the difference between the old straight-sided Camp Hexentrics versus the curvier Wild Country Rockcentrics
These nuts are sturdy. In a year of use and abuse, I have only managed to bend one wire. When you get a good placement, they are super reassuring. I found them perfect on smooth rock, such as limestone or rhyolite (again, similar to the old Camp hexentrics).
If you are just starting to build up a rack, or if you want a second set of nuts to complement your existing set, consider getting a bunch of Metolius Curve Nuts. You never know, one day you may be joining me in suggesting an alternative option in the Wild Country Rocks versus DMM Walnuts debate.