TOP or Improve Your Poker?

[jtnt1096]

I play mostly NL tournies, SNG's, and ring games. I have all the NL books (Harrington, Brunson, Cloutier, Ciaffone, etc.), but I am looking to add another book to my arsenal.

Between Theory of Poker and Improve Your Poker (Ciaffone), which one will help me more in NL play? I have heard TOP is catered more towards Limit HE, so I wasn't sure if IYP would be better or not.

Thanks for the advice.