It is such a personal thing that I do not think there is anyone who can really help you in making this decision. How do you feel about the blues that you have been using. How was the actuation force? Did it feel ok? How about the tactile feedback? Did you enjoy it?
i feel they are pretty good, i like typing on it but i just dont like BW cause it's very waste of space, i have the 2012 version so it get dirty too. i think blue might be the best choice since they are easy to get and cheaper. Blue and brown are about the same. i was thinking about brown since blues makes a loud clicky sound.
In that case , sticking with blues might just be the safest option since you know for a fact that you like them. Personally I do not think blue and brown are about the same though, I have a clear preference for the browns, though you may have a very different preference. You can get a sample kit over at WASD keyboards if you want to feel the difference
http://www.wasdkeyboards.com/index.php/products/sampler-kit-1.htmlbut even this only gives you a rough idea, one switch will not let you know how a full keyboard with that switch would feel.
Unless sound is a huge issue for you, I would not choose browns only because of the reduction in noise. The switch itself makes a little less noise, but for the average person, a lot of the sound when typing comes from actually bottoming out, which will be similar for both switches unless you are one of those ninja typists who manages not to bottom out even on light switches.