If you don't mind store purchases, Arizona SeaBottom has a very good selection of LR. AquaTouch also has a selection, though I think its pretty small. Both pretty decent pricing all around. Oceanfloor has some as well, though I'm not sure on their price.
AZSeabottom and About the reef have the best selection of LR in town at the best prices. I would not recommend anything from OceanFloor, their prices are high, fish health is poor and everything else is questionable.