There's a load of them out there, quite over whelming to be honest, so here is a review of the ones we have tried.
Dr Browns Natural Flow -This has a air venting system which is simple and works very well, we use this bottle a lot and rather like it, but it does have some issues.
The cons to this, there are a few parts that come apart to make it work, which is more hassle to wash, also the lid doesn't pinch the nipple but relies on a disc that you put into place behind the nipple to stop it leaking when your on the move, this is a major hassle to take out and not lose when in a hassle, and this is the main draw back to this bottle. Also the neck of the bottle is fairly narrow so you have to be careful about pooring in formula or you could make a mess. The pros, it does work very well in venting the air and minimising burping with our baby and the bottles are study and don't leak when you use the disc. 3/5
Playtex Ventaire - This we got as a free sample and though we would like because it has a vent system to reduce gas and the angled head means it is easy to tilt up and feed the baby, it also doesn't have many parts and is easy to clean. The major downside to this though, if there's any moisture or air in the base when you screw it on, the bottle won't seal and the milk will drain right out of it, which can be a problem when your tired at 2am trying to make a bottle on the quick. The bottle also feels fairly flimsy so it might not take to as much abuse. 2/5
Green to Grow - This is now our favourite and prefered bottle. It's an organic bottle, BPA free and all that, so nice and healty. It's also fairly study and the lid clamps on the nipple to prevent it from leaking and works well in that regard. The cons to this bottle, there's no special anti gas feature, but we generally don't have a problem with gas. The other problem is the curved shape of the lid, which means when you put it down it has a habit of rolling away and could get lost which will make a mess of the bottle, this really isn't a major problem, but it could be if you are on the road. Also when you buy the larger sized bottles, it comes with a stage one nipple when you'd generally be wanting either a stage two or three for that sized bottle. 4/5
Adiri - This originally was our favourite bottle and it worked great when our baby was first born and very small, because of the soft rubbery feel and appearance, it was most breast like for the baby to get used to, so it worked great when the baby was lying down, also the wide opening makes this very easy to fill up with forumla or milk. The problems with this bottle, you can't change the nipple stage size, so you have to replace the whole unit and it's fairly expensive for a one off bottle, also the capped lid doesn't do a great job of clamping the nipple which causes this bottle to leak quite a bit when on the move. The way that it is made also means you have to fill it up upside down, this can be a bit awkward to do late at night to read the measurements. The venting base does work quite well though, but like the Playtex bottle, it can cause a milk leak if put on when wet. For newborns at home 5/5 after a few months 2/5
First Years Soothie - This bottle came with the breast pump and what we like is the wide opening which made it easy to fill up with formula, and also it's quite short and stout, which makes it very stable, which is great. This bottle travels well too as the lid fits onto the base of the bottle so you won't lose it when it use, but the extra wide stance of the bottle does make it difficult to fit in many of those insulated bottle holders. There isn't any real con to this bottle apart from not being BPA free, there is a slightly creepy face in the nipple, had we not been given other bottles we probably would use more of these. 4/5
Think Baby - This is another great bottle, more as a transitional bottle between breast feeding and bottle and from bottle to sippy cup. It's another BPA free etc health bottle, but has a soft nipple that's shaped more like the tip of a sippy cup. The one we are using has handles to help the baby hold it up as a cup which she seems to really like. This also has a wide opening making it easy to fill and the lid locks firmly into place to stop leakage and also has a flat top so the lids won't roll away on you. 4/5
Boon Spoon Squirt - This isn't actually a bottle, but it's a great spoon to help start feeding of rice cereal and for feeding whilst on the go. You fill the handle up with the food and you squeeze to pour a drop of food onto the spoon. This does work really well, but the plastic cap that seals it for travel is a bit tricky to snap into place and there's no where to keep it safe whilst you are using the spoon. 4/5