^^^ Perfectly said... From the general feel i've got, most people on here training with 18 oz gloves as the norm. You can go a little lighter I suppose to a 16 but much lower than that and your giving up a little padding that helps when your training on the heavy bag a lot. 20 is probably a little heavy if your a small guy, but if your bulky and a nice hard puncher, 20's will be fine... You can't go TOO wrong with what you go with though... I just chose 18's as that's what everyone was suggesting and they have been perfect for me.