You may be able to get something cheaper, but you really can't go wrong with Cateye. They are very reliable. Cateye has been making bike computers for, well, I don't know, but maybe longer than any other company. There are tons of satisfied customers. I've had other brands, but Cateye is still a winner. Just check out the features you want, and you'll get what you need. Buy it at your local bike shop. You won't spend much more than online (if at all), and you'll be satisfied. They may even install it for you for cheap or free, and if they do, it will work very reliably.