I just used the supplied MR11 lamps. Am surpised how bright are the ones who may well compete with the 35W halogen. The light color is almost the same. Will gladly order from another needed. But as with all LED lamps an appropriate transformer is need to insert, then has one long a lot of joy to the lamps! The maximum load of the transformers should be none Be if more than 80% of the maxima load. then keep very long.