Up here in the socialist workers paradise we plebs can't carry. That said I'm with Red Leg on the XD. I have the original in 40 used for IDPA. I'm a lefty and a bit safety obsessed. The XD unlike the Glock has 2 safeties, trigger and grip like the 1911 and an ambi mag release. With modern hollow point ammo I wouldn't feel undergunned with a 9mm, with hardball it would be 45 only.
my $0.02
I also have an Xd. Standard Service 4" in 9mm. The trigger isn't as crisp as a S&W M&P but, when I look at it I think "This is what a Glock SHOULD have been." No cheaping out on plastic trigger, sights, etc. also, as to the 9mm being ineffective, I don't have as much experience as I only worked as an armored car guard for a couple years, which probably seems like a mall cop to a lot of people, but I worked with a lot a guys from Vietnam era on on... All I can say is, if the 9mm were as ineffective as everyone seems to think, why does the adoption rate by militaries and civilians keep going up, not down? I do get tired of the "it was designed to wound" malarky, or "its all just politics and bean counters". The military doesn't design weapons to wound. If their bean counters ruled everything, we wouldn't have an F-22 Raptor or an M1A Abrams Tank. They pick weapons that they think are a balance of a great number of things. Power, logistics, useability, precision, and practicality among others. The 9mm, honestly, was a wonderfully thought out and designed cartridge that was way ahead of its time. It would be 50 years until someone came up with something that could be crammed in a semi automatic pistol that was as reliable and efficient as old Georg's slim, tapered supersonic round.
here is a great article about why it is chosen more than .45, .40, 10mm etc. :
http://www.tactical-life.com/gear/45-acp-vs-9mm-ammo/#bsum-buffoni
Anywho, back to the XD. It is a wonderful tool, lightweight, accurate and durable as anything in it's class. I love mine and I wish I had owned it when I was required to carry a gun.