I agree with everything said about the Rugers. However I'd have to disagree with the comments about the Walther. I have heard of one or two stories about the slide cracking but have NEVER actually seen one or know anyone that has seen one cracked. My wife has a Walther that her and my 9 year old son shoot more than anything. Just a fun little gun to shoot and the perfect gun for her and our son to practice or learn with.
Although I probably would have gotten the SR-22 had I not found the right deal on the Walther first. But that's just because I've always been a Ruger fan.