I agree, I do not see blues as being particularly quiet even with o-rings. Browns or clears (can't get a Filco, but can I interest you in a nice Leopold?) would be better options IMHO.
Honestly, the quietest "good" board may be something like a SGI Granite because even the non-clicky Cherry MX switches will make some noise when the switches return to the top. Unfortunately, this isn't the kind of thing that you can "try before you buy" to see if you like it, because the only boards that I'm aware of that came with the dampened Alps creams are the Granite and the Apple Extended Keyboard II. However, Matias is supposed to be releasing new switches soon which will be "quieter and more tactile" than Cherry switches... presumably being concurrent with the introduction of a new version of the Tactile Pro keyboard.
More info here:
http://geekhack.org/index.php?topic=32769.0The "orange switch" referred to in that thread sounds similar to the old school creams but I don't know that anyone's had the opportunity to test drive any, yet. Again, per that thread, "The new keyboards are still on track for a late-August / early-Sept release" so, um, any day now?
I'm not sure whether I prefer my clears or a SGI board for typing feel, because they have very different personalities. The Cherry clears (and to an extent, browns) do not have a sharp tactile point but instead a bit of a "bump" in the force required to depress the switch about halfway down, which corresponds to the actuation/reset point. The Alps have a very crisp tactile point near the top of the travel and force falls off dramatically after that, meaning that you're hitting the dampeners on every keystroke - no "floating" to avoid bottoming out on an Alps board. I'm not sure that I've ever really warmed up to any un-dampened Alps board, although I do like the Granite. It's one of those things where I have both and can see myself switching back and forth between them as my mood changes.