I have a variety of QR mounts from G&H, Leupold, and Warne. I like the Leupold QR better than the QRW or Warne, but the small levers are fragile to the point that I would trust the more robust QRW or Warnes if you're only taking a 2nd scope and not a 2nd rifle.
I had a set of Leupold QRs on a rifle that fell onto the carpeted floor of my gun room and both the levers snapped off. That single experience colored my perception of them. While it might never happen again, once was enough for me.
The scope swapping that I do with QR mounts is done so that I can use a Leupold 6x42 for first/last light hunting, while allowing me to swap to a Leupold 2-7x33 for the rest of the hunting day. I have been criticized on this site for doing this, but it has worked well for me.
