Whats a good bulb to buy from J&L?

[Delphinus]

I ran both XM's 10k's and 15k's over my old 75g and liked them both. The 15k's were, as I recall though, a bit more blue than I was expecting especially since at the time I was coming off Iwasaki's which are 6500k, which I thought were white, but were positively yellow in comparison. The 10k's were a really crisp white though with a bit of punch on the intensity. So those two get my vote for sure. I'm sure the others are fine too, sort of depends on what kind of look you want.