I am looking for some bike lights that are very cheap!- but still pretty bright. I have been looking at some LED type ones on Ebay, and was wondering if anyone had tried similar ones that could recommend/discourage me in buying. These are them:- Item number: 120255371556 (21 LED) Item number: 350054821292 (53 LED) or maybe:- Item number: 350055139949 9 LED , Aluminium. (could possibly fit 2) with this at back:- Item number: 170215202055 or, have you any other (cheap) recommendations??