Quoting Jeanine Simmons:" He is currently on Enfamil Premium. Before that he was on the Similac Sensitive and he came home from ... [snip!] ... on Enfamil High Calorie (he was low birth weight) I have tried Similac for spit up and he wouldn't even drink the bottle."
My LO was BF for a week before realizing my milk was not satisfying him or not coming in, I'm not sure which, I switched to formula because he was REALLY sick with Jaundice, I was so upset. But, I switched him to Similac Advance, the default the hospital will give you..But, he would eat and eat and eat and never get full, and would get really fussy. I switched to the Similac Sensitive and it did wonders, he ate on a normal schedule, he spit up less, it was great. Sorry, it's not working out for you. There's a lot of trial and error in picking formula.
I just used the Walmart, Parent's Choice bottles..I never had a problem with them, at all. Not once did they leak or cause any problems for LO. I loved them.