Thanks for all the replies! After looking at what users have done before and consulting local lighting
shops, we ended up buying some really nice SORAA
LED MR16 lights
. We installed them in some (less expensive) track light
fixtures and used them as up-lights. We spliced out the internal inverter in the fixtures and wired the MR16 lights
straight to the 12V battery
. For home applications, the MR16 fixtures have an inverter to convert the AC power to 12V DC for the bulb (which is why we chose this form factor). We also splurged and got the interchangeable magnetic light
covers that change the diffusion angle of the LED. With the fixtures we bought, we have the option of turning the light
down and using it as a spot-light for reading.
LED technology has really advanced since some of the previous threads listed, and our LED lights
give off a beautiful warm, bright light.
We also got a inexpensive dimmer to put in to save some battery
. Makes a humming noise form the PWM controller, which we believe is easy to fix, but we haven't done it yet.
Pictures below! I can take more close-up pictures if you're interested in the details of the install.