Bob Books Vs Blurb

[x.Sazzle.x]

Not strictly craft related, but certainly photography related...

I'm trying to decide between the above for creating a wedding photobook, which I'll be doing on Mac, probably in InDesign, though I may consider using their software.

Any pros/cons to either Bob Books or Blurb? (I've done lots of research & narrowed it down to these two!)

Thanks!