I had an OLD one (which I HATED). It was passed down through Dan's family.
Delaney was in it until she was 6 months old. I only moved her out when I was afraid she might pull herself up in it!!

Kim - mine was ancient. But there were a few things I didn't like about it. (I don't think you'll have these problems with the newer ones.)
But...
I think the spacing was too wide on the sides. I kept a crib bumper in mine for that reason. (Geez... writing that I feel like a bad mom. DH and I argued about that too.)
AND - mine rocked. Honestly - I didn't like that part of it. I was always afraid the dog was going to come up, put her big head over the top and tip the thing over. I had it wedged between my bed and the dresser so the dog couldn't move it.