Durable wool-synthetic blends?

I own two Patagonia Merino 1 shirts, both long sleeves, but they also come in t-shirts. They are 65% wool and 35% capilene. Thus far I've found them durable- they are pretty thin (which is why they make a good base layer), so you can't treat them overly roughly. But both have lots of hours both hiking and trail running w/ a pack on and are in very good shape.

I also prefer the feel of wool and I think Patagonia found a pretty good ratio in their Merino 1.

I wouldn't spend $75 though, wait for a sale- my long sleeves were under $40 iirc

I have a Smartwool PhD Run long-sleeve zip T that is 79% wool, 21% nylon; it is very thin and does come in a s/s t-shirt.

It is thin-enough that it doesn't inspire great confidence in durability and it is very expensive (I got mine on sale, I would not pay full-price at $110.00). I haven't had a chance to really test it yet, only one day hike with a light pack.

The newest Patagonia Merino 1 and Rab Meco 120 are both 65% merino, 35% poly. Functionally the fabrics are identical. Both are more durable than any similar weight wool I've used, but not nearly as durable as the best 100% poly baselayers. I think they're a decent compromise overall.