If you're looking to buy the best monopod for you, there are some vital things to bear in mind. Which are most important to you?
1. Maximum height
If you're tall, it's well worth checking that the monopod you're considering can extend high enough to enable you to use a comfortable and natural shooting position.
2. Hidden costs
If you need to buy a tilt or ball head separately, this can often cost as much as buying the monopod itself. It's important to bear this in mind if you're working to a budget.
3. Go clockwise
If you want to start using the camera in portrait orientation, tilt the head in a clockwise rather than anti-clockwise direction (as viewed from the rear). This will avoid the camera loosening the mount's locking screw during use.
4. Maximum load
Monopods that come complete with a tilt head generally have a lower maximum load rating than those that don't. The monopod itself may be just as robust as others, but the load rating is reduced to take the head into account.
5. Vibration Reduction
While it's usually advisable to switch Vibration Reduction off when using VR lenses on a locked-off tripod, you'll generally get sharper results by leaving VR on when using a monopod.