This is something I've been looking for a long time.

Although I just "dealt with it", I've always had problems with vents on the teats... Either they leak, or need a strong suction (that sometimes even causes the nipple to collapse on itself), and they make noise, etc. It's just the pain point I've always had with baby bottles.

But now I've found a baby bottle which has a vent on the bottom, and it works flawlessly. No noise, no leaks, no strong suction, it's just the perfect one for me. And it's has a wide-neck nipple, so it fits the rearz ones just fine (it uses a different standard with slightly different sizes, but it still fits)

It's a "Chicco perfect 5" I bought on amazon, I find it quite cheap, it only cost ~9€ - I think chicco is italian and looks like it's only available on european amazon sites.

The only problem I've found is that at first the bottom vent didn't work at all, but I solved it by getting a toothpick and manually opening each one of the slits. They are extremely tiny, at first I thought I was ripped off because I didn't see any and it was just something like a membrane that moves without letting any air in (also because I was looking for openings at the center of the valve, which doesn't have any). They are really really tiny and they are around the inner ring, there are 4 of them. After opening them slightly with the toothpick (without making them larger) it just started working normally.

Some pictures here with a detail of the bottom vent: https://imgur.com/a/GA3E87r

Another plus side is that it's easier to clean than a regular baby bottle because it can be dissasembled from the bottom. And the largest size is 300ml.