Hi - interested to hear what others think. I EBF my 11 week old DS but have been expressing so he can have the occasional bottle. I bought a steriliser/ manual pump & bottle set from Mothercare. It's an Avent one and I've got him on the smallest new baby teat (number 1). I did try him on 2 but he coughed and spluttered everywhere. I haven't tried any other bottles so can't compare but we have got on fine with the Avent. I first gave my DS a bottle at 4 weeks btw...I'm pleased I did as friends who have waited longer have struggled to get their baby to take one.
Don't buys all one type to start with!! It's a very personal thing. One baby will only get on with one brand, another with another... another won't be fussy.
But very annoying if you've spent £££ on Avent or Dr Browns as they're the "best" and it turns out baby prefers £1 boots own brand (a friend had this happen and have also heard of it via Mumsnet).
My two pennies is that most "breast mimicking" marketed bottles have huge, hard teats that LOOK like a breast to the adult eye - but are not always comfortable for a tiny baby. Remember they are going to suck differently anyway so looks are not that important. Texture was for us though: we tried several brands and Lansinoh from mothercare with a soft latex teat was clearly the winner! A slow flow teat is best.
Also try each bottle with cold, room temp and then hot expressed milk (warm it in hot water or a bottle warmer- NEVER a microwave) as temperature can make a difference. Also, they need to learn how to suck a bottle so try over a few days ... it can suddenly click.
I offered my baby a bottle after 3 weeks, for me that was 3 weeks after good breastfeeding started - I wouldn't try before that as you don't want them to get a bad latch. Let them learn one then the other!