H&M's clothes ranges from cheap to expensive.. been there few times and bought a few items there myself.. but you would have to be careful of low quality stuff.. so you gotta check properly first on the materials whether they fit the price tag.. As for ZARA.. hmm.. it obviously has better quality compared to H&M but of course it is a little pricier.. but I've seen them offering real cheap stuff during their promo periods.. probably wanting to clear out their older stocks.. maybe you can wait for promo/sales period from ZARA before buying from them? but it depends on whether you go for quality + price or just Quality irregardless of price etc etc..

I have a few Uniqlo items myself and I think uniqlo's clothes are really nice to wear.. not to mention comfortable too.. but the thing is, their design isn't as good as ZARA or H&Ms.. not much choices/varieties if you know what I mean.. but their R&D Tech on their materials and quality is really good.. hmm.. maybe like what other forumers are saying, they are probably good with Winter clothings..