We have 3 types of drying rack that we use inside: the 'Z' style, the 'A' style and the off-the-radiator.
The 'Z' style works but fills up easily. Large items hang over the lower rungs and stop clothes hanging there from drying well. We mostly use ours for underwear, tea towels and other, smaller items.
The 'A' style is an improvement over the 'Z' as large items can be placed towards the center and they wont interfere.
Both the 'A' and 'Z' styles fold away quite well for storage.
The off-the-radiator racks are handy if you have radiators like we do in the UK. They are particularly good in the winter when the radiators are on as this speeds up the drying. There is a risk of corrosion to your radiators, however, and the racks are a pain to store when not being used.
