Milk bottle choices

I'd choose Avent. I tried Tommee on my boy but it didn't really help with his colic. He's better using Avent and Dr Brown's bottles (known to be best for colic but the washing is a hassle as it has separate valves). Avent bottles are compatible with Spectra pump which I'm using, I don't have to buy a separate adapter tt Tommee bottles require. It really depends on what u're looking for and what ur baby is ok with. It's kind of trial and error to get the most suitable bottle for ur baby.