As for the KL1 on the E1e, I like the KL1 much better than the incand bulb. Since it doesn't throw that far anyways, why not have a bright flood. To me, the KL1 looks a lot brighter than the incand bulb. I would go for it.
US vs TL, I have the US, and I have seen the the TL. The TL throws a little bit farther. I like the US because it fits between my seat and centerconsole. It looks better too IMO.