Pretty much thermaltake all the way in my book. They are a tad pricey sometimes, but they work very well, when they say you are going to get 5v on this cable they mean 5v not 4.85v. Getting one with modular cabling is nice since you can reduce the number of extra cables, and as a result make your box more tidy and have better airflow. I have never had a Corsair psu, but Corsair has always had reliable products in my experience.
Whatever brand you get, enumerate what you need as for as plugs (for example motherboard 20 pin, CPU 4 pin, 2 SATA, 1 molex for case lights, 1 molex for an extra fan, 1 PCIe 6 pin, etc) That way you know better what you are looking for, and you can avoid overkill, while at the same time avoiding having to put too much on a single strand or use a ton of adapters.