Totally right. OP, just buy one of the highly rated ones that cost about $40. You'll like all of them. They're all bright and well made at that price point.

Rivendell has some good ones, including a battery version of the dynamo-style one that I like. Pick either one of those brands and you'll like it. Or a super flash with a rack mount. Or a cygolite with a rack mount. Again, whichever one you buy, you'll look at it and say, wow - that's bright!