I was in this same conundrum lol

I tried on and looked at all the shops had, and I found that basically all the carriers except the sports one were very thick and would be very warm to use in summer. Not to mention for bubs too.

The sports one is ALOT lighter and the material can breathe alot more, Can extend further on the straps, and IMO looks nicer with the black fabric and white stitching

Plus it still has the hood and whatnot as the other types do.

Oh, and it's also cheaper!!!