I have tried many of the weapons commented on here, and I absolutely love the XD over the Glock...and especially over the all-metal guns. The newest XD's have thumb safety toggles, like a 1911...which makes them perfect, IMO.
I really shopped around before buying the XD, and I found reviews and tests that impressed me. The 10,000 round torture test was spectacular, especially since the XD fired every shot without a jam. i could not believe what they put the gun through.
I was looking for a good 45 carbine as a companion to the XD, and I was about to settle on a Beretta CX4, when I found out about these:
Carbine Conversion Kit (only 1911 and Glock now, but XD next month)
The XD-M is a little heavier, thicker, and more like a 1911. People who use 1911's a lot will like the XD-M better, and people fond of Glocks will like the regular XD. You may not like it, but I would consider the XD to be vastly superior to a Glock. With a Tactical barrel and 13 round clip, it is exactly the same size as a 1911.
I am new to the board, but love weapons...just putting in my 2 cents.