I have one of these as well (majestouch tenkeyless). My girlfriend routinely threatens to throw it out the window (which would obviously be devastating), but I am holding on to it tightly. In my excitement I bought a version without key markings. In retrospect, this was kind of silly. Theoretically it was supposed to promote touch typing, and so consequently increase my speed. In reality, I don't really notice a difference, and it mostly just serves to deter friends and family from using my computer (probably both a positive and a negative outcome).

I had the tenkeyless "ninja", which basically means the key markings were on the front instead of the top. It was a nice compromise.

I also use the Das Keyboard "ultimate", which has blank keys. I rarely look at my keys anyhow, so it's mostly a conversation piece at the office :P

There's a newer mechanical tenkeyless keyboard that's pretty cheap, the CM Storm Quickfire Rapid: http://www.amazon.com/CM-Storm-QuickFire-Rapid-Mechanical/dp...

It's a "gaming" brand keyboard I guess but it's half the cost of a Filco and comes in 4 different switch types. I just got one, seems pretty nice, although I only use it for gaming and my MS Natural 4000 for typing. Though I wish MS would make a tenkeyless version of the Natural 4000, because I do dislike the extreme width (they're making a new wireless ergonomic keyboard that's tenkeyless but it has scissor switches and I don't really like switches with little travel - almost went crazy when they gave me an Apple thin keyboard during an internship, and I quickly went to their old computer parts storage and got an older Apple keyboard to avoid losing my mind).

Actually the successor to the 4000 is what you are asking for. http://www.microsoft.com/hardware/en-us/p/sculpt-ergonomic-d...

I am a Filco 10 keyless and wouldn't go back. I find it crazy that we have this 5" of obligatory keyboard everywhere as through everyone really needs a specialised desk calculator. Its where the mouse is meant to go!

The only drawback I have found is some 3d modelling tools assume a keypad in their default settings. Obv. you can remap the keys but its not as natural and makes following tutorials harder. If I were to use these more I would consider purchasing an external keypad but not to permanently give up such prime desk real estate for it.