I don't have a winch but looked at both. The SDHQ has install instructions, the WSI does not but seems self explanatory how to install. If you plan on keeping the stock bumper, it looks like the SDHQ might be the better option since it includes it as a kit.
Plus the SDHQ does not require drilling into you main frame on both sides like the WSI requires. The SDHQ looks to use factory mount points and the only drilling you do is in the horns which to me is not that big of a deal.
Looking at that Rough Country one though, if I was to get a mount, I would get that one. Still uses the factory mounts and includes a control box mount too. Looks nice and half the price as the others, seems like a no-brainer.