I can only give you my experience that started in 1995 with my first baby.
I bought three sizes, 18 in each size and six liners for the bigger size although in that size I did buy disposes liners which are around a quid for a hundred back then!
They were shaped like pants and fastened by Velcro and were soft and squidgy.
For the life of me I can't remember where I bought them from but they were called Mikey Diapers and may have been Australian. Sadly no longer made.
I paid £150.00 for them and they lasted through two babies and still looked in fantastic condition when I sold them at a NCT secondhand for £20 for the lot!
They were fantastic. Neither of my children had nappy rash except for my son once when left in the care of grandma who didn't change him for over half a day!
The routine was easy. Six clean and ready to wear, six in the wash and six drying either outside on a line or indoors on an airer.
Poo when solid was shaken down the toilet.
After removing I kept them in a large bucket and they were easily washed and dried.
I did use disposable nappies if we were going out on a day trip purely so I didn't have to carry soiled nappies around. At the time 1995 and 1998 disposable nappies were horrible and they may be better now but felt very plasticky back them. Bums would be red after use and thankfully they were only used very occasionally.
Quite frankly they were the best baby item I bought and even factoring washing machine costs and the outlay of £150, I think they were extremely cost effective for two babies.