I bought a couple of these products last year and I LOVE THEM!
I have a singlet top in the dark red colour and a scoop neck top in a light greenish grey (both colours are shown in the Grazia piece). I find Uniqlo a smallish fit across the chest, so tend to size up to accommodate that area (they are Japanese sizing after all).
I wear both tops as layering pieces, they are especially useful at this time of year when you don't need a big heavy coat or something waterproof. I don't get too hot in them indoors, but I think that US homes and buildings are hotter (and colder) than UK ones.
Last winter I wore these tops at least once a week and they seem to have washed very well.
I would also recommend the socks and the tights.
There is a Uniqlo about 2 minutes away from my office and it is a firm favourite for basics with myself and my 2 (female) colleagues. I have had only one top that has stretched (white cotton and I now sleep in it!), but it only cost me £3, so for that price I don't mind.
What I love about Uniqlo is the range of colours they have. Their prices (in London) are cheap too, they often have great deals.