I wear a variety of camo and don't get to hung up on brands, patterns etc. I certainly haven't spend much $$$ on my waterflowl camo and wear the same old stuff every year. Whatever you wear, make sure it's fabric/finish is dull and doesn't reflect sunlight and generally matches the tones in your environment.
I hunted with a friend who insisted on wearing an expensive First Lite jacket and he contantly spooked birds because it had to many light colors that contrasted the surroundings and when he constantly flared birds. He would of been better off with a $15 camo walmart hoody.
I always have my camo waders on and for the top, anything from a cheap camo LS T in early season, to a run of the mill brown underarmour hoody, a water resistant camo pullover, or even my green HH impertech rain jacket when it's raining hard. I also always have glove of some sort. On my head is always a camo mask, usually an everyday camo hat but I have a dull brown carhart beanie I love to wear when its cool. Last spring I wore a $6 plain white cotton short sleeve T over a insulated jacket on oa cold snowy goose hunt. Worked just fine.
Like Lamont22 said above, watch your movement when the birds are working your setup and don't look right up at the birds. A couple weeks ago I watched a couple guys with good camo flare bird after bird because I could see them moving from across the marsh. They were set up behind a few camo burlap tarps ( clean horizontal lines) with no brushing in. They had everything they needed to have a good shoot but everything about their setup gave them away.