10/22s are good guns, uncle has one and he's been satisfied with it. I would also recommend a marlin model 60. I have one and it's a reliable accurate gun.
Don't really want to argue, but do a Google search for xd/xdm as far if they are single action. I have heard that these guns were banned from certain shooting events because they are considered single action only because the trigger just drops the sear. Here's a quote from shooting times review...