In reply to sanguine:
Short answer - I need new monos but despite various discussions with other climbers, I've not found any great concensus amongst them as regards durability. Hopefully some other replies might be more conclusive.
Long answer...
I don't climb particularly hard but I do have friends and acquaintances who climb far more and far harder than I ever will...
They mostly seem rather resigned to trashing picks and crampons at a fairly rapid rate of knots regardless of make/model and despite many years of experience or climbing at a high level.
At least one well known (sponsored) climber is rather notorious for the abuse they give their (free) equipment. I'm not particularly gentle on my gear but that amount of force they'll use with their axes gives me pause for thought.
Conversely, one friend climbs with (and rather envies!) an individual at the cutting edge of Scottish climbing who is well known for exceptional technique and somehow makes their gear last 3-4 times longer than.
I'm pretty sure that the same applies at most grades. Technique and precision will always make far more difference than a slight difference in forging or heat treatment, but as soon as you climb regularly enough you just need to treat Winter gear is a consumable.
I didn't do much harder stuff last year so I didn't need to buy a replacement for my second set of now blunt G20s but lots of mountaineering routes meant I pretty much trashed a pair of Air Techs within the season. I also finally killed off two Quarks that I'd been using for a while.
Whilst I've been happy with my G20s (by the time the front points are trashed, the rest of the crampons have also been pretty worn), I can't really offer any testimony about how they directly compare to anything else.
In discussions over recent years with a view to replacing them, I haven't heard much evidence that any particular manufacturer is vastly better than another. About the only thing people seem to be relatively consistent about is that the aftermarket imported picks and front-points are at least as good as the originals.
Probably not that helpful and I'll be interested in what anyone else thinks.