William was bottle fed from birth and I started him on Aptamil 1 in the hospital. He was ok for the first few weeks but we soon started to have problems with spitting up and tummy aches. I found that the aptamil was too harsh - it even stung my skin if I got it on me, so I changed him to Omneo Comfort by Cow and Gate.. which is now called Comfort, and used Dr Browns (Bfree) bottles. It was the best thing I ever did.. he was transformed - no more spitting up everywhere, he was more settled and thrived on it.
I have written about it loads on this board so do a search for Omneo Comfort and no doubt you will see my posts crop up talking about it.
If you want any more advice about Comfort please pm me - I used it with Woo until he was 12 months old and I truly havent got a bad word to say about it..