Just thought I'd add my input to sm8770's second question, the cost/size/reliability issue.
Like many on the forum I have a number of handguns to choose from, HK's, S&W, Kahr, etc. in various calibers and configurations. Since I bought my first R9, the only time I carry anything else is when I'm in the woods and wearing clothes that make concealment not an issue. Then I like a .45, or .44 mag. depending on the situation/location.
Once in awhile I will carry my trusty 340 series .357 revolver, but rarely anymore. I've had a PM9 for a long time, it's a great little gun, but even though the dimensional differences are very slight, the R9 is much easier to carry I feel, and it is super accurate and easy to shoot in the type of situation that you would realistically need to use it, ie a self defense situation at relatively close range.
Mine has been completely reliable and I actually shoot it quite a bit at the range because it's so fun to shoot. I would save up for a few extra months, or whatever it takes and get a nice used R9, you won't be sorry, you can't beat them for a concealed carry 9mm.
One more thing, for concealed carry wearing a suit, an appendix carry holster will work quite well.