>>983377>I wear a heavy school bag for my daily commute and my current Velo saddle is just destroying my ass bones during the bumpy ride.Regardless of your saddle, getting the weight off your back will be a huge improvement. Consider a rear rack with panniers (some covert to a backpack) or a front rack / basket. Seriously, it makes a huge difference.
You could even go for something stupidly heavy but simple like pic related ($50). But a rear rack with a milk crate strapped on ($20?) is a good beat too if you don't care about speed or looks
If you want to spend big money and keep the back pack, maybe a Brooks b67 --- it has springs. Meant for upright riding