no problem! :) Wish I could've been more helpful.
I don't have a lot of experience with the 2D side of Unity, but from what I've heard around the grapevine yeah, it has a few quirks and 2D is not it's strength (I have no sources and no firsthand knowledge to back that up...just repeating hearsay, so take it for whatever it's worth :P)
Thanks. After all consideration we will definitely try Unity, as one of us has some experience with this engine.
if you just want 2d, I'm quite fond of a game engine called flat red ball. http://flatredball.com/
To tell you the truth I have never heard about this engine, but it looks pretty neat and we will look into this engine a bit more, it definitely cought our eyes. Thanks for the suggestion.