The sugar in formula is there because breastmilk also has a lot of natural sugars. It's not considered unhealthy. The sugar and fat content actually is necessary for the health of your baby.
Now personally I like how Good Start has whey based, since I think that helps to combat some of the problems babies have with the larger strands of protein in milk. If lactose-tolerance is an issue, soy formula is NOT recommended anymore since soy allergies are very common (soy should be used as a last resort.) Instead there are lactose-low and lactose-free formulas, and that should be tried instead. Personally, I've had pediatricians suggest to go straight to lactose-low and lactose-free formulas, no matter the brand, so that's what we've done with formula and I can't complain.
There's basic standards though, and as long as it's an FDA approved formula made in America then you can be sure that it's going to meet their nutritional needs and it's as close to breast-milk as we know how to make it at this point.
Breastfeeding wasn't an option for me either. I am continuing to express the little bit I can, and breastfeed what I can to him, but due to a physical defect I simply cannot produce enough breast-milk to keep a baby alive. It's no one's business, you didn't ask for opinions on breast-milk (the question was about formula for those brain impaired), and people need to get off their high-horse about it. But what research I've done on formula tends to make me look at Goodstart favorably, and then think all the rest are basically equal.