Zefal Wiiz, £6.99
A good bottle cage is a simple product. It should hold your drink securely in place on your frame, release the bottle smoothly whenever you need it and allow you to easily slip the bottle back in place even when you're moving at pace. The Zefal Wiiz does all that and more. The sprung side-entry cage parts effortlessly when pushing the bottle in or pulling it out, but it grips the bottle securely, even on a bumpy ride. This lightweight thermoplastic cage is reversible so you can set it up for left- or right-handed usage. Its mounting works on any frame but it's particularly good on small or compact frames.
Tacx Tao, £13.99
At only 37 grams this is one of the lightest bottle cages in the world, which probably explains why the Tao is favoured by a number of professional cycling teams. Simplicity is the key to the design of the frame - it's just a thin strip of aluminium with a layer of rubber around the top and the middle of the cage to protect your bottle. On the bike, it didn't perform as well as the Zefal. There's no give in the cage so you have to shove the bottle in to force it home and pulling it out again requires just as much effort. Things did loosen up a little with use and the bottle does feel rock solid when it's inside the cage.
Moro d'Elite, £49.99
If you're more worried about grams than pounds then this is the bottle cage for you. The Moro d'Elite is almost four times the price of the lightweight Tacx Tao, but you save a further eight grams. However, the d'Elite is about more than just weight. The entire frame is constructed from durable carbon fibre, which makes it both solid and flexible at the same time. A standard bottle slides effortlessly into the cage and although it's held firmly in place it slides out just as easily. You still might struggle to justify the hefty price tag for a bottle cage, but it's certainly a beautiful piece of kit.