Haven't heard them, but looks like Paradigm also offers a good selection of inwalls with some cheaper options than PSB, etc. Might be worth a look since I'd guess they're in a similar performance range. Someone told me there were some deals on Revel inwalls (I didn't even know they made inwalls), and that might be worth exploring as well.
As far as dipole inwalls for the rears in the second room, I wonder if that's really necessary. My friend had in-ceiling rears placed a little behind and a little wider than the listening position(s) and with that placement they offered very nice diffuse and non-locatable ambient sound. Might save you some $$$ too if that would work, and with the advanced EQ programs in today's AV receivers I'd think that could compensate for your high ceilings. Anyway, best of luck.
As far as dipole inwalls for the rears in the second room, I wonder if that's really necessary. My friend had in-ceiling rears placed a little behind and a little wider than the listening position(s) and with that placement they offered very nice diffuse and non-locatable ambient sound. Might save you some $$$ too if that would work, and with the advanced EQ programs in today's AV receivers I'd think that could compensate for your high ceilings. Anyway, best of luck.