Again, thanks everyone. I didn't realise just how many (singles excluded) would have different surnames. It's actually quite refreshing and shows how our society has evolved.
I guess my main concern then now is the impact, if any, that my boys may feel. Right now they are too young, I assume it's not something they would even understand or ask about until school years. But I would just hope and pray they felt no embarrassment. VicPark your comment about different family types is a good one, thanks.
MeetTheBluths - you're right, and I hate the link to his family too. DS2 is 5mths old and I've still yet to receive a visit, card, call or even text from his family. The whole surname just doesn't sit right with me at all anymore - it's purely because of the boys.
I doubt I'd get very far, but I wonder if I should at least consider raising the subject with exDH about giving them my surname. I won't hyphenate, so it's either keep his or take on mine. I'd love for them to have mine, because I doubt I'll ever change it again, even if I ever remarried.