So, what is yours, and, most importantly, why?

EDIT: I use colemak because it is (for me) the less finger- charging

Dvorak, for the last 19 years and counting. Why? Much more speed and much less fatigue/pain.
Straight Dvorak, aside from the slight relocation of the `~ key due to Cherry's strange design choices. (It used to be in the bottom row, and they went so far as to key the rows differently such that they couldn't be swapped, but I wasn't having any of that and hard-modded it.) It's all remapped in hardware though. I'm lying to Windows and telling it this is a QWERTY keyboard, which makes things simple if I need to plug in another for someone else's sake.
Same here. My pinky fingers are strong enough, and I have no problems typing while holding SHIFT or whatever. They're just not long enough to comfortably use outside of the bottom two rows or for striking ENTER, so I do everything with the other six and one thumb, pretty much. I even backspace with the ring finger because the reach is so much easier. I also cross over frequently in the "no man's land" in the middle of the keyboard, in particular frequently taking D (analogous to your H) with the left hand, which is almost certainly bad form.
Given the relative ease of remapping on a Cherry POS keyboard, I have impulsively decided to give Colemak a run. In fact, I'm using it (slowly and painfully) right now. One clear advantage over Dvorak is that no key jumps two rows, making the relocation of contoured keys somewhat less of a problem. My keyboard LOOKS much nicer. Also, the remapping of CapsLock into Backspace is brilliant and I almost certainly will retain that even if I don't stay with the new layout as a whole.
The International Agencies, UN, CERN, ESA, UE have to decide also the layout to use. Working organisations mixing Spanish, Italians, Germans, British, Portuguese etc ... need to define a standard. In these environment, my experience is that standard US ANSI is used.Muirium wrote: In Europe, we mostly use ISO. Some of us prefer ANSI though, in my case for its looks and ergonomics: the symmetry of the Return key is more pleasing to me, and I don't have to reach out as far for it as with ISO. It's also so much easier to get nice caps for in group buys. Though there's a lot of fine vintage ISO caps out there, just not so much on the new side.
...oh, I get it!
My current workhorse is a Macbook Pro built-in keyboard.