One of my first n scale purchases was the California Zephyr. I eagerly purchased two BLI E7s from my LHS to run with it, they looked great and the DC/DCC sound seemed like a great plus. Unfortunately the BLI units do not play well with my DC power pack, so I've tried to stay away from BLI for the time being. Unfortunately that leaves me with LL being the only E7s available on a wide-scale basis.