I have absolutely no complaints here.
For a small patio area, the size of these bags is perfect: theyre about a foot or so in width when filled, and a little under 2 foot tall: they also look really neat and "clean" when all filled up, no dangly handles etc, and theyre fairly easy to shuffle around if you need to.
When it comes to the end of the season, with them being little more than tarp sacks, storing them wont be an issue either.
As for my potato plants - they seem to be extremely content in them and are growing a storm - in fact Ive been slightly amazed at how much theyve come on and in such a short time too.
And I can see myself getting another set to grow something like squashes or berry plants - theyre a lot more robust than I anticipated, and for my small garden make excellent mobile "raised beds", and are a great alternative to more expensive solid pots of a similar size.
UPDATE:
Last year I grew a very successful crop of potatoes in these sacks, and after harvesting those, replanted my tomatos in them with great results. Based on this I bought another two sets for this year to plant my Pink Fir Apple potatos in. I cannot recommend these enough for those with limited garden space - or for those who have plenty of room but want something to grow a "protected" or controlled crop in... or even those who just dont want to use up planting space in the ground! They are superb, and a fantastic price (I saw a similar set in my local home depot store, which is usually fairly cheap, for £4 more than they charge on Amazon!)