Weight Gainer Powder?

Hey all,
I was wondering what everyone thought about the weight gaining powders you can buy that include all the macro nutrients, namely Optimum Pro Complex Gainer. One scoop is 650 calories, 60g protein, 85g carbs (5g sugar, 4g fiber) , 8g fat (3 g saturated). Is using something like this as a meal replacement acceptable? I usually have a scoop if this with 12 oz skim milk and sometimes some chocolate syrup as well. I'm currently bulking, 6' 210 lbs,12%bf been eating around 3500-3700 calories on workout days in order to gain weight.

Sorry,wrong forum. Please delete this post moderators.