i have used the tommee and tippee bottles used the one most shaped like a nipple with a cool little valve thing on DD2 since she was a few weeks old. Its our favourite! She got her teeth early and chewed on alot of her other cheaper teats and ruined the "no spill" valves they had in them (Nuby & heinz ) Avent i love also! Especially their sippy cups as there is no way she can ruin the valve.
i think the BPA stuff is a load of Bull. Yes canada banned it on the "better to be safe than sorry" alot of studies have been done (google is your friend) Personally if your worried about BPA then you should avoid formula tins, canned baby food and just about every other canned good as its used in the lining (altho the studies have shown like the bottles that no it doesn't seep into the canned good/BM/Formula) Most plastic items in your house possibly plastic baby toys, teething rings could contain BPA.... so yeah look it up and make up your mind if you are concerned.