I'm in the market for a headlight for my roadbike. I'm liking the cree XML t6. Seems very bright and relatively inexpensive (eBay- 50 dollars) the only thing I don't like is the battery pack that you have to attach. The other option is the cygolite metro 300. Downside is it doesn't seem nearly as bright however there is no battery pack and I can get a combo headlight/taillight combo for 75 dollars. The taillight is the hotshot, which was the one I was planning on getting regardless...any opinions on this?