Sitka is worth it, only a few items that I wouldn't buy from them. Rain gear is at the top of that list. Dew point because it rips if you give it a mean look. The rest because it is overpriced. The Sitka Ascent jacket is one of my favorite pieces of hunting clothing ever. Sitka flows through the bargain cave too so that's a bonus.
That said, Kryptek, First Lite, and even (gulp) KUIU have great stuff too. If you're not all consumed with matching colors then shop around and piece it together.