They are both pretty awesome and i think either way you go you will be happy. Personally I've got both but have found with the way I work Quixel has been better - with my personal work flow I like its all incorporated into photoshop and there is little jumping back and forth between applications but the biggest bonus for…
You should really use the "presets" as kind of a starting point if you are going to use them. From there jump into the mask editor and you can customize the hell out of it switching which textures are in the masks and the strength, fall off, contrast + layer styles all all of the mask components - it's very powerful.…
Personally, I dont see how you can maintain a consistent look between assets in a non-node workflow. This comes to the forefront when working with multiple assets and re visions.