There are so many about, and some people swear by ones that other people loathe - tbh, I would just see what you can get second hand or on sale, and go with them! Its as good a way as any of choosing which ones to try.
I agree with not buying too many and see how you get on. If baby is chubby, or long or skinny, or whatever, they may need different styles. Or baby might start out chubby and then slim right down by 6 months, so I wouldn't buy lots of bigger ones to grow into either, as some brande seem to suits some shapes better than others.
I always have a few terry squares and cheap covers on hand for when we run out of the better ones too - It makes the whole thing cheaper, as you can just buy enough good nappies for a 'normal' day, and not have to also have a few back ups which you may not use so often.
FWIW, we got on well with tots bots, and their fleec covers for nights, also bamboo shaped ones (bamboozle?), with fleece covers, swaddlebees stuffables were trim and cute but not very 'thirsty', Weenees pounch pants (very trim, and dry very quickly), and had lots of cotton bottoms we got very cheaply as back ups, although I found them very bulky.