I have an S2k and my friend has an IS300. First off you cant compare the two. Maybe the only thing similar is both are RWD and both have double wishbones all corners. Thats not to say the IS is a fun car as well. Just not nearly as fun as the S2k.

Since you are having a kid then you really have no choice....IS300 it is.

If i was in your situation, id go IS300 and throw in a turbo on that bad boy!
Good Luck

 

well personally I really like the G35, it has a decent engine and it gots all the lil goodies that one might want in a car. If you were really going to consider the IS then personally I think the G35 is way better. Well dats just how I feel tho, but since you say you feel in love with it just wanna give ya just make sure it ain't hurting yer wallet with your other bundle of joy coming