I can confirm first hand that western mountaineering makes high quality bags. I would also recommend marmot and mountain hardware 800+ fill power rated bags. I have yet to get a down bag dangerously wet. The biggest culprit is usually condensation on the wall of your tent. If you have a concern about this there are good waterproof stuff sack options.
It's been my experience that most bags are overrated in terms of temp. For example my 20 deg WM bag (alpenlite) is too cold for me at 32, I just use my zero degree bag (MHW Banshee SL 0deg).
The nice thing about WM bags is you can send them back to the factory (Made is USA) and have them "overstuffed" for some extra warmth.
