The Sheffield Rack made of stainless steel tubing is hard to beat so long as the spacing meets accepted standards.
The plastic coated ones eventually crack and split and the zinc galvanised ones look horrible and have a surface rough enough to scratch paintwork.
This example is located too close to the wall, a common mistake.
Other mistakes include placing the stand right next to a lamnp post, or sufficient space for 2 bikes but not enough for an additional person, placing th horizontal too high or low, or replacing the horizontal section with an "attractive" but less useful curve.
You can buy sets of racks welded with the correct spacing.