I have used cloth nappies on DS since he was born. When he was around 18mo, I started using disposables at night because the clothies started leaking and changing him would wake him up too much (he wakes very easily). He is still in night disposables, and if we go away for a few days, he goes in disposables as well rather than lug an airtight nappy bucket around with us. We use the Nature Babycare ones - might be more expensive but they are mostly biodegradable so I feel less guilty; and they have fewer chemicals in them so better for DS's gonads.
He wears a cloth nappy during the day - no longer poos in it, insists on pooing on the loo - but wees in it. I don't change it every time, he gets a clean nappy in the morning and then maybe one more change in the day, depending. He doesn't care and is currently refusing to come out of nappies (mildly irritating but no point pushing him) and his skin is fine and peachy.
So, because he doesn't need changing as much as he used to, the nappies only get washed once a week, maybe 10 days (I love my nappy bucket). In the early days, I had to do a load every day, every 2 days max but it's gradually diminished.
The clothies he has now are the same as the ones he was using from Day 1. They get napisaned and washed at 70deg C (I bought a washing machine that does variable temp - love it!) using a non-bio powder.
I know it sounds a touch contrary but it's a fine balance between trying to look after both DS and the environment!