ZX12RIDER,
You're going to love the M&P .45 4". It does indeed have a cleaner look to it. What's odd is that it actually feels more balanced as well, and it IS a little easier to conceal. I traded my fullsize M&P in for one. I like it a lot. I like the full-sized .40 and 9mm versions as well. But check out the compact .45 version too, if you get a chance. The beavertail is truncated somewhat (but still prominent enough to give a comfortable grip). It comes with one mag without the pinky extension, and one mag WITH that extension. With the extension, it's more comfortable than any Glock 30 or 36 I've ever put my hands on, whether they had grip/mag extensions or not. All that, and the barrel is still 4", same as the midsize.
But I opted for the midsize anyway. Still easy for me to conceal, 10rd mags instead of 8 rounders, and a full size grip. I'm happy...