any good review for comotomo bottle, because bottle is soft type worry baby will press milk out

my friend had used the bottle before for her then breastfeeding baby when she wanted to transit to bottle. She shared that she likes the fact that it is soft and it operates like a "breast" where baby can be deceived. She had tried many bottle brands and finally the baby takes to comotomo bottle which is a delight to her. However, there are also some problems which she had encountered. As it is silicon feel, she cannot see the marking clearly and it is harder for her aged mother who had to squirm. There are times that milk was spilled out when it was not put properly due to its shape. It can be frustrating when breastmilk are leaking out when toppled over. Overall, she found it cheap and good to use this bottle.