With DS1, I would go to bed when he went to bed (since he would wake every 2 hours to nurse)... which was around 8pm.
With DS2, I go to bed at a "normal" time- like 11pm... he goes down around 8:30pm and is up between 1:30am and 4am (depending)- and then every 2-3 hours after that.
As much as I SHOULD want that extra sleep, the "me" time is more important for me and DH right now...