When buying a new keyboard I look at a few things such as funny placements for keys, as well as the position of the F4 key in relation to the numbers below it.

When buying a new keyboard I look at a few things such as funny placements for keys, as well as the position of the F4 key in relation to the numbers below it. I tend to use Ctrl-F4 quite a lot and I do it by pressing the heel of my left pinky into Ctrl and then pushing F4 with my left index finger. On some keyboards they like to move the F keys over to right for some reason (ie. past numeric 5) and then the distance becomes too much.