I'm sure that this has been discussed before, so just humor me! For those of you with 2 or more kids, did you buy new bottles when your 2nd babe was born? For those of you that only have one LO so far, would you buy new bottles if you have another baby? I have been wondering about this. Alot of people say that they just buy new nipples and use the old bottles. We used Born Free bottles with DS, and will probably buy these again, but I think I would want to replace the other silicone and plastic venting parts as well as the nipples. This will cost almost as much as just getting new bottles. What say you ladies? New bottles altogether, or just buy new nipples and use the old bottles?