I'd say Sport band too. Leather loop comes next then ML.
I guess the more soft they are, the comfier they are.. But as far as looks go I'd say my all time favorite band is definitely the Link Bracelet 😀 Doesn't hurt my wrist, just a different feel than the previously mentioned bands.
IMO, the link bracelet is the best looking but with how I sit at my desk, the bottom of the watch band is right on the top edge of the desk, which kind of digs into my arms. It's not that it hurts, it's just not real comfortable and can scuff the bottom of the band. Not sure how different a softer band would be - maybe I need to change the way I sit!
For me it the leather loop. Fits my wrist the best, plus I have bad skin reaction to rubber and metal bands. Bought the sport band and return it. It caused a rash on my wrist. The classic leather, while the leather was good, getting the right hole to fit is a problem, either too loose or too tight. The leather loop has been very comfortable and it does soften up after a while, plus endless adjustability.