Makes depend on whether you want screw in filters or slot in filters.
Personal preference for me is slot-in (more convenient if you have multiple lenses with different filter thread diameters). As for makes Lee are about the best you will get for slot-ins. Hitech are a good interim choice and reasonably priced too. Then there's Cokin. The Cokin can produce a magenta colour cast but if shooting RAW that can be fixed in PP.
As for screw on filters,these are made by Hoya, Tiffen, B+W, Lee and are all pretty decent (they work well when all your lenses have the same filter thread diameter)
Ultimately it boils down to the price you are willing to pay for what you need.