IMHO...the best thing to do is go to your firearms dealer and handle each one of these pistols and choose the one that suits YOU the best...I recently did this at Bass Pro.... XD-40 subcompact vs Glock 27 vs M&P 40c....I chose the M&P because of its feel and I like the thin profile as compared to the wider and bulkier XD-40 and the Glock + Smith & Wesson has $50 rebate offer (or 2 free clips)...The drawback on the 40c was capacity(9+1), but found that standard M&P magazines(14+1) would also fit, but stick out of the bottom, but when the SHTF looks don't matter all that much....