Yukon, G2, Motive gears are all the same gears just in different packaging, but I'm not sure if Dana falls in that category too or not. I would tell you just to buy a set from the manufactures listed above. When I got mine Yukon had them cheaper than G2. Typically the only time anybody has problems with the gear sets is when they are installed wrong
I talked to a gear installer in a shop that was high volume heavy duty truck repair shop and he said that dana spicer gears were easiest to set up compared to others as far as not having gear whine. Not that that makes them better but maybe they have a better finish or something.