I am partial to Salamander as that is what I have. I love the flexibility you have with the Synergy system. You can add on to it, put wheels on it, add shelves, adjust them infinitely, add doors, add drawers, extended rear panels for deep components, add a flat panel mount, etc...etc....I like the looks of it as well.
But I have done a couple of those Sanus Woodbrook cabinets and they are solid. If you can live within the limits of the Sanus and like its look better than the Salamander, go for it. If you have deep components (more than 17.5" or so), or lots of stuff that runs really hot, the Sanus can get toasty inside even with their "convection cooling system". They are pretty classy looking and heavy.
Either way, you should be happy. But I think the Salamander is a better value.