I have not tried MX Blue, I chose Reds from the start, and after getting into BS, I had no desire for any other clicky or tactile switch. Now though, I am thinking of supplementing my Leopold F660cM wth the 21-key numpad, but I could only find it with Blues. I have tried out the new Razer Black Widow Ultimate at a local store, and I hated the tepid click and lack of tactility. It seemed like a Red with a weak, necessary click tacked on as a completely separate component (which, of course, it is).
My question now is, do these switches really emulate the feel of Blues, as users have said? I don't think Blues are for me if they do. I mean, if this was the only choice, so be it, but I'm hoping Blues offer something more substantial. I suppose with my experiences, it's all-or-nothing when it comes to tactility and click. I either like linear or chunky BS.