When comparing sunbeds you have to try and compare like for like, for example same power, number of tubes, make of tubes, design of the bed.

Do you want to stand up or lay down?

How long do you want to spend on the sunbed?

Decide where you are going to put your bed. Do you have the space. Do you need your own bed? Where will you store it when not in use? Some beds come in two designs one for permanent home use and one for quick dismantling for the hire market. The hire market ones can usually be dismantled in seconds and stored out the way.