I've had mine close together and wouldn't have it any other way. Xander was 16 months old when Marshall was born, and Marshall is 16 months old now and his little brother or sister is due in 8 days!
That means 3 under 3, and no, i'm not crazy!!
My boys are the best of friends. They play together all the time and everyone is always saying they'll be great mates. They also fight, but i figure they'd do that regardless of how many years were between them!
The main thing is being able to maintain 'special' time with each one, and i get that during nap times as they're not always asleep at the same time. It is difficult to start with, trying to breastfed while keeping an active 16 month old busy, but i figure this time Xander will help occupy his brother while i'm feeding.
Goodluck in your decision
Dette, DS 06.03, DS 10.04, DD 03.06 & Due Sept 07!