I bought an inexpensive full wet suit made by Body Glove, 3-2 MM. It does not fit me well as I am not a standard size, which makes it hard to put on and even harder to take off. So as Dig says, size is very important. I will definitely be looking into the Henderson Hyper-stretch that Dig mentioned should I decide a wet suit is in order again.
I had the same issue with all of the off the shelf chest waders, to get a proper chest fit, I had to by one which is larger in the rest of my body, ie the leg length would be 4 inches too long. I tried several brands on, both neoprene and breathable. It was always the same, no where near a good comfortable fit. However, in the end I did find the solution at Cabela's Outfitters, called the Stout fit. I bought the neoprene stocking foot breathable type, and lace up wading boots.
I chose the breathable type since I live along the Texas Gulf Coast and winters are not normally severe, however this year has been worse than most. I wear fleece under garments in the cold and shorts underneath during the summer months. I made this choice based on the recommendation of a Duck hunting guide. I have found that the breathable type limit the sweat accumulation inside the waders, and keep me drier. For my situation they suit me well, easy on, easy off, skin protection from all the nasty aquatic life and very light.