It depends which TT bottles you mean? Just the bog-standard Anti-colic (with the vent in the teat) or the TT Anti-Colic+ (with the pipette in the middle)?
If it's the basic ones vs Dr Brown's, then no contest, Dr Brown's were better for us. Our LO suffered horrendously with wind on the basic TT CTN bottles, and when we switched to Dr Brown's she was a different baby.
The problem came when she started wanting 8oz bottles. When you add the powder to the 8oz of water, it would put the milk above the "Do Not Fill" line on the Dr Brown bottles. This would (sometimes) make them leak horrendously.
We tried the TT Anti colic+ bottles (which have a pipette like the Dr Browns ones) and they were a great replacement
They work exactly the same way as the Dr Brown's ones (I reckon they ripped off the idea
) but they hold more. And they have a little valve thing on the bottom of the pipettes which prevents the milk being sucked back up the pipette, so you can be a bit more vigourous when swirling the milk to mix it
I haven't voted in the poll, simply because what bottle I recommend really does depend on which type of TT CTN one you're asking about!