V.W.
Talk to your pediatrician. We found that Carnation was a lot cheaper than the "big 2" (Similac and Enfamil) back when our kids were babies (10 years ago, lol). But I wasn't sure quality wise. Our doc told us that ALL the formulas have to meet the same safety and nutrition standards, so any of them are fine. Find one that your baby likes/tolerates (some babies need "specialized" formulas due milk allergies, etc) and a formulation (powder, premixed/canned) that works for you and your lifestyle.
The canned/premade ones tend to have a slightly different consistency than if you use powder and make your own... so whatever you decide on, if your baby is happy with it, they may not like it if you switch around on them. Powder costs less.