I've been happy with mine.
It's a big gun. Be sure you like the grip size before buying.
I don't know of any shotsells available in 10mm. You'll have to load your own or buy a .40S&W conversion barrel and purchase .40S&W shotshells.
For what it's worth, I don't believe that there are any decent self-defense loadings in 10mm (or any other decent handgun defensive calibers) that won't "punch through walls". If it penetrates deeply enough in human tissue to have a decent chance of inpacitating then it will penetrate enough through drywall to kill someone on the other side.