^ Yes, it's a good idea to consider the commercial ones, e.g. vestfrost.
Not only do they come with a 5 year warranty, but they're also fully galvanized to prevent rust, and are repairable if things do eventually break, so better for the environment etc etc. The other thing we found is that the Scandanavian brands come rated for outdoor use, e.g. in a garage, whereas the standard ones in Currys etc were only warranted for external temperatures of 10 degC ish.