Mostly really pleased with these, but the cheap, non-magnetic screws made things quite tricky when installing ...but I got there in the end.
I always feel that sliding shelves are very over-priced — these for me are expensive, but they cost much less than very similar-looking shelves from other brands that I found online.
I have been using them for a month now with heavy cast iron pots and pans in them (among many other things) and so far, so good!