I'm looking for a bright tail light for day use on a multi-day tour. I have a road bike without a rack, so it would probably best mount on the seat post, with internal batteries or a small battery pack. I have a DiNotte headlight, so am familiar with that brand and am thinking about a DiNotte 300R tail light. Does anyone have any experience with it? How do you like it? It's very expensive. Any others out there that I should look into or that you'd recommend over the DiNotte? Thanks!