Yes, I noticed the huge difference in run times. Shouldn't be an issue for me as I only do about 1-2 hours of night riding in a given week. But it'd be nice to have the extra time if needed.

My only issue with the Hotshot is that I need a light on my seat stay as my saddle bag blocks my seat post and the bag doesn't have a light loop. Hope to remedy that with a new bag soon, but until then want something to go on the stay. And from what I've read, I don't think the Hotshot can go on the stay without some sort of modification. Am I correct about that?