I got three of their T shirts in the sale more than three years ago and they were still my best T shirts until I recently spilt oil down the front of two of them.
I got a pair of their trousers at about the same time. They were still looking god enough to wear to work until a month or so ago, when the knee finally wore through, despite near constant wear for a couple of years.
My merino base layer has been great, though it did gain a couple of holes after I washed it with some velcro (but anything woollen would do that) on their equally great board shorts.
I bought a jacket in their summer sale this year that seems brilliantly made, but I'll see how it survives before raving about it.
Bought both my kids a hoodie each. That'll be a test of how hard-wearing their stuff is!
All the above were bought in the sale, or on 2 for 1 offers, but I've reached a point where I'd be willing to pay full price for some items. Once you realise how long they last, their trousers seem good value (though I'll not be paying over £200 for their hemp jeans), but I'd struggle to buy a merino jumper for £120.