Got some MURS radios. They showed up yesterday, and I was able to test them today. All 5 channels work from one end of my property to the other (only about 200 yards, but that covers my main use case) even when one HT is inside. We did have problems with the PTT button on one of them, but we're thinking that may have been operator error.
They're not as good as ham radios, because they're limited to 2 watts and they're limited to 5 frequencies (151.82 MHz, 151.88 MHz, 151.94 MHz, 154.57 MHz, and 154.60 MHz), but they're license by rule (you're considered licensed as long as you follow the rules) and the rules allow for removable antennas, unlike FRS (my radios don't, though).
The two higher frequencies used to be licensed business band frequencies, and some businesses do still use them, but I'm far enough away that I don't expect that to be an issue.
I also finally broke down and started using hamstudy.org to study for the Technician exam.