I'm a frankencamo fan. Cabelas camo britches, first lite camo jacket and under armour camo gloves, w/ different cabelas camo boots. No way am I dropping over $500+ in one throw just to match for one system. I add pieces every year based on where I need upgrades and what I can find on sale. Nowadays if I'm in a treestand and not wearing bibs I top it all off with a leafy suit. Based on several experiences this years I've concluded it's much easier to win a stare down if you look like a tree.
I have some Realtree Extra, Predator Fall Gray (favorite), Core4Element in Mountain Mimicry.... Buck I shot last year I was wearing my Core4 pants and Cabelas Dryplus pullover in Outfitter camo. This years buck, Realtree Extra pants, Mossy Oak Fall Foliage jacket. Yes, that jacket is 25 years old and looks close to new. I'm a firm believer in minimal movement and good cover.
I do try to pick camo that blends with the habitat I'll be hunting. Lighter for brush...darker for woods but since deer see shades of blacks and grays who knows what is best in any particular situation.
My son has been using a dark ghillie suit this year and I walked up on him a few times in the past few months. Even knowing where he was I could not pick him out until he moved. The ghillie suit breaks up the human outline. Breaking up the human outline and keeping movement to a minimum may be more important than any particular type camo.
They all work I usually select what I think will best match my days environment or back drop. However, I believe anything that helps break up one outline is a plus but don't necessary haft to be camo. Eventually the turkey have not passed on information to the next generations as my camo Tree Bark still works just fine. Took a lot of deer before camo made it's big splash on the market...
Remain still and do your best to decrease human odor is still the big plus.
Of course one can spent lots of $$ to obtain "Style points."