The cracking might be due to storage; temps/ humidity - I’ve had no issues with mine I live in Southern California so it’s pretty dry here. I’ve only worn them a few times though
Yeah I’ve worn mine probably a total of 10 times in the last 13 years casually- they hurt after 8 hours of wear though lol that’s when I pull the nb’s out ha ha. I’ve sold a lot of sb’s over the years and yeah who would of guessed the hype would get this huge?
Comfort wise yeah the 991, 1500, 577 in that order sadly the 991 will probably sell out first next to the 1500 depending on the colors. I like to wait for them to go on sale personally. The 577 is probably the most underrated out of the 3 not sure why.