Just be careful that no single purchase you make is over $750 and you'll be fine. I know a couple who was burned for taxes/duties because they tried to bring back a $1400 computer thinking that they could combine their duty free limits.
if you go over your 750.00 per person just give someone else you're travelling with the difference if they arent near theirs. We're going at Christmas and my husband told me I can spend 100.00 I looked at him and said thats per store right? lol