Here's the short and sweet: Sturdy – minimal assembly required (just pop the 4 support arms in) – holds a ton of clothes – folds flat when not needed.
The sock clip feature is a neat idea but but that useful. I moved mine to the side so it's not taking up a full sized bar that could be put to better use. If you fill all the notches, you might find your socks are still wet after everything else is dry. I'll stick a few things in there well spaced but for the most part I put my socks and undies on an over the door rack (cheap, gray, 3 tiered) but you could also hang one of those octopus hangers on the rack if you wanted to keep everything in one spot. By doing something else with socks and undies, I can fit 2+ loads on this rack, which is seriously impressive for how little space it takes up. Putting some items on hangers on the end helps to really max out how much it holds. It's not tiny by any means but if you compare it to the accordian style rack most people are familiar with, it's maybe 1 1/2 times the size but holds 5 times the capacity. (Of course how big a load is is determined by how big your washer is and how full you cram it – I have a pretty big washer but have done enough appliance repairs that I try to go easy on my machines if I can)
The bars are wide enough that most things can be laid out with minimal or no bunching at the edges. The end bars are prime since they have a few more inches with the curves. There is enough space between the two levels that I don't worry about things touching (hoodies being one exception but I put them on hangers at the end). The short wings are perfect for drying a sweaters – we tend to have thick sturdy sweaters so no mesh support hammocks needed. It's narrow enough that you can move this thing fully loaded through just about any doorway. Definitely a nice feature of you use this outdoors and a sudden storm rolls in! And it's sturdy enough that you can move it fully loaded without having it collpase.
I've read that air drying doesn't really save as much energy as you might think, in terms of utility bills, but if you are in a situation where you are using coin machines to do your laundry, this will pay for itself quickly. It's definitely easier on the clothes themselves – no need to worry about shrinking, setting stains, etc. If you dry outside, you can have issues with sun fading or things drying stiff if they dry too fast. I find that most of what I hang indoors ends up as soft as if I'd used a dryer but hanging a clothesline inside takes up a lot of room. This takes less space and I think even less time – drapping things over the rod and picking them back up feels faster than un/pinning. The rods are thick enough that I don't find things dry with an obvious ridge in them. I have a dryer but figure that by air drying part of the time, I will keep the dryer alive as long as possible. If there's an old-school method that works just as well with fewer moving parts, why not use it? Plus for some odd reason, I find hanging laundry to be very relaxing.
I think I'll be buying more of these for gifts as my kids go off to college – it will save them so much money on dorm dryers and they'll never have to worry about shrinking clothes. I wish I had bought one years ago – I've always viewed air drying as a warm weather thing but honestly I think it works even better inside and I could have been doing it all year round all this time. I've tried hanging clothelines in the house but with 6 people in the family, it's a lot of laundry and felt like we were always playing limbo – this is so much buch better, for so many reasons.