Look, I'm not going to argue about the efficacy of camo in deer hunting. It helps. However, having said that, let me also say that I have taken a fair number of deer either in doe-brown Carharts or this:
At this point, I could smugly announce the case was closed. Even if you factor in the deer's red color blindness, the clown suit still comes out a funky muted yellow. A blob like that in the woods stands out, no matter what.
What I can say is that any old camo will work. Muted splotchy stuff seems to work best. When I was bow hunting, my most effective camo was a poncho that looked like this:
I took my first deer under that poncho with navy work coat underneath. I took every (he thinks again) Yep, every bow killed buck under that poncho. I've been on the ground, 3 feet away from a doe, and took her kid brother at 5 yards with a bow wearing that poncho.
(and why that deer was wearing a poncho I'll never know!)
Digital? Any new hunting camo that is digital is strictly there to sell you, not the deer. The older military patterns are just as good as the new fancy 4D patterns. Flecktar, Woodland, Alpinflage, DPM? They all work great. The only problem is most of the old cheap surplus stuff is gone the way of the $30 M1 Carbine.
Pay attention to what's underneath. A good warm jacket and bibs that are rain proof and will keep you warm should be where your mind is at. Frankly, any insulated bibs and parka I've seen at Walmart for $50 or so is just fine for my use. I add extra layers as needed.
BTW: I just scored 2 pair of uninsulated camo bibs from Wing Supply for $35 each. They showed up yesterday. I forget the pattern-- some fairly new sticks and leaves thing. The nice thing is that I can use these early season, and then wear them out to the stand when it gets cold and then climb into my insulated clown suit once I'm in the stand. They're 100% cotton so I can throw them in the wash with the sodium bicarb.