Well, like you said, it's a 10/22. You can walk in to almost any walmart in the country and walk out with a 10/22 for around $200. I've only seen the SR 22 in a gun store, and he had a sticker price of $550 for it. Do I think there's $350 worth of parts on the SR 22? No, I don't.
To be honest, I'm kind of sold on the S&W M&P 15/22 for a plinker after handling it, an SR 22, and a GSG-5 two weeks ago. I just liked the feel of it the best of the three.