Well your first action when considering dueling with a Mac is to find out what kind of Mac you're going to be dueling. Some Macs are lighter and more agile (Mini and laptops in general) whereas some are definitely more of a powerhouse to come up against (Mac Book Pro and Mac Pro). If you're going to be making it a fair fight, always pick the same model Mac or equivalent PC as your weapon of choice. If you're a dastardly scoundrel, get yourself a fully loaded early 08 Mac Pro. They're beasts and should be able to take down most anything they come across. The Mac Pros are doubly dangerous in that not only are they a huge, heavy hitting machine, but they're insanely fast and they can handle multiple attacks from any direction. Don't let their size lull you into a false sense of security! They can be dangerous in almost any given situation. Another warning: watch out for the Air. Yes, it's a lightweight and maybe not terribly fast, but it keeps it's edges razor sharp and even though the cuts may be small, get enough and you're done for.

Oh...

Wait...

You meant that you wanted to dual box with a Mac.

That's not nearly as exciting if you want my opinion, but each to their own. In that case, read what Ughmahedhurts had to say. You're stay here will be much more enjoyable not only for yourself, but also for us.