soix is right, the Ohm Walsh 2 are terrific for off-axis listening and i have a set in my bedroom.
This said, I own the Mofi Sourcepoint 8 and it is enough bass for my living room, which is the same size as the OP's. The Sourcepoint 10 would have been too much.
One more thing, with patience you will find the Mofi speakers on the used market. Mine were gently used, found on Craigslist locally for $1600.