I've been using the 700c 44mm Snoqualmie Pass for a while on one of my bikes.

Pros:
- unreal ride quality at 28-32 psi. Suppleness on suppleness. Seriously, believe the hype at this size and this pressure.
- very fast rolling on both pavement and gravel.
- durable tread.
- very well made. Handmade tubular quality and details.
- sweet looking.
- lots of grip on wet roads.

Cons:
- not cheap
- not really designed for tubeless setups despite what compass says. To be fair, I haven't tried to set them up but I've heard it's a pain.
- paper thin. I have actually not flatted them in 1K+ miles on some pretty rough stuff (knock wood) but they are hardly confidence inspiring.
- essentially zero grip in mud or loose corners.

I wouldn't recommend these below 32mm, personally. You need the high volume and low pressure to really get the benefit. Above 32mm, I really like them.