Doesn't matter, good brands may last longer, but overall the wear and tear on the bag/pads is gonna deform your gloves. Bags usually don't get cleaned up on the reg, and your gloves tap that everytime you go at it. Not a good thing to your partners to smash shit into their faces and with hardened gloves.
Everlast aka Neverlast is prob the shittest brand there is these days. They sell it at Walmart for god's sake, if you're sold at Walmart, you know you're near the bottom of the chain. My first headgear was everlast, and it was because I was required to get headgear and $20 to me was better than shelling out $80+
Winning is probably the best, but they cost an arm and leg
My training partner bought brand new Neverlast gloves from sport-check, took it out of the packaging, pulled the velcro over when he put it on, and the shit ripped. Brand new, and ripped on first use.