Thanks for your input Miket. I just watched a video with Studio Strings Pro and it does sound great. Certainly much drier than Chamber Strings Pro. I can see having both these libraries but I also have the Cinematic Studio String Series as well as the CSS Solo library so I definitely want something drier and with less baked in vibrato.I don't have Chamber Strings, but I do have Studio Strings.
I think it's got tons of potential, but you almost definitely will want the Professional version; same for the brass. The one mic you get in the basic, Tree 1, doesn't really provide the sound I'm after. It has a little more room in it than I'd like for most purposes, and if you're buying these libraries for the flexibility they offer, you'll probably feel the same way. I know some people were skeptical about needing more mic positions in Air 1 than in the Hall, but they really are all different and useful, going by the Herrmann Toolkit.
I can't wait to upgrade and get the Outriggers. The additional instruments in the brass and the divisi functionality with the strings are obviously enticing, too.