bottombumpers med vs. os?

[pbandquince]

Advise, please: I wanted to get a few BB after getting a free one and really liking it. Its a one size, but I think I might want a medium for a bit more trimness. However, my dd is 4 months, and nearly sixteen pounds! So, would I be better off with the os in the long run? How generous are the mediums? (I like the snaps, which I have heard are a little roomier?)
TIA!

[newtocloth2]

I've only tried medium sized bottombumpers, but my 19.5 pound son fits them great, and probably will for a long time. Plus, babies usually slow their growth once they become mobile.

[MamaJules]

I've never used the one-size so I don't know how they compare. But my skinny boy used the mediums until he was almost 2. And my chunky monkey is 11 months old, about 21 1/2 pounds, and still has plenty of room for them.

[pbandquince]

Thanks! I was leaning toward mediums.