I use cloth diapers! We only use GroBaby diapers. It's actually funny that you posted this because Cloth Diaper Whisperer just posted a video comparing the GroBaby diapers that we have with the new line from the company's re-launch as GroVia diapers! I have major cloth diaper envy & I want the new ones now!!
Either way, on to your question - I've gotten in the habit of changing Isis about every 2 hours. Sometimes earlier if I hear her poo or something, but now that she's started solids, she only poos once a day. I try to change it every 2 hours because then she never gets diaper rash. She sleeps through the night, so we don't change her diaper at night. We wash diapers every 2-3 days.