Sadly, we did not see the lights the night we went, but the tour company cannot be faulted for that - can't control Mother Nature. But, highly recommend the East West - from the booking to the hot cocoa, it was well handled. They also offer a "re-do" in which you can go again if the lights aren't out the night you go. (Sadly, we couldn't take advantage of it b/c of timing), but you can't ask for much more than that from a company.
Our tour guide, Gulli B tried hard to entertain and keep our spirits up. Would have liked to hear a little more about the Northern Lights phenomena, or Iceland history in general during the drive and time spent watching, rather than an unusual assortment of music ... but that's just me.