IUDs - good option for contraception?

I have a question for any women that use IUDs.  I'm going traveling with my boyfriend in June and obviously neither of us wants to get pregnant.  I am really torn because I personally don't want to take any hormonal contraception.  I have taken pills before and I just did not like the way I felt.  Also I have read that it can increase cancer risks and since breast cancer is in my family I just don't feel this is a good option for me.  I'm contemplating an IUD because it is less worry, but the non-hormonal one can increase flow during periods.  Is there any one that is using an IUD (either with or without hormones) that could let me know how they feel it has affected their body? Positively or negatively?