Glad to hear you enjoy it! I've been using MX Browns myself for several months now and I absolutely love it!
As for the tenkeyless, the reason many of us are holding off on buying one is because we'd like a tenkeyless keyboard. For those of you who don't know, tenkeyless are keyboards that lack the numpad and are more compact/smaller than a normal keyboard.
Most, if not all of us who want a tenkeyless already have a full-sized mechanical keyboard (I myself have a full sized Das Model S), and would just like something smaller to compliment it. It's not that the current Duckys lack any sort of quality (they're great keyboards); it's just many of us already have full sized keyboards and would like something smaller is all. I personally am waiting for a tenkeyless for my laptop
So in short, there's absolutely nothing wrong with your keyboard