Had a full set of SIO's in medium and loved them, sold them on when outgrown (about 9 months old).
Went to Babyshow AIO launch and got Ebay bargain Itti's and decided to go for AIO's in large so ended up with a full set in those. Were less absorbent to had to buy a booster for each one and then a few went scrunchy and delaminated and I really went off them.
I am in the process of returning another one to Green baby. Sold on all but 3 of the good ones. Then began to feel sad, without my Itti rainbow that I so loved and have just bought a couple more SIO (and so the obsession continues!) I believe their are new colours silver, navy and bubblegum coming here in mid august.