beefy got it right IMHO - espresso or nothing. and espresso machines need not be expensive (don't buy by the cup in stores, it's big money down the drain).
however, my spouse likes french press (rough ground, top with water, press down). my sister stays with drip (can be okay depending on filters and how well the coffee is roasted and ground, usually rather bitter though). my dad makes turkish coffee (finely ground, boiled with sugar until it foams three times). well, this is a gadget lovers' forum, you can find many other methods.
in the end, coffee will be better for your than the corn-syrupy softdrinks you're trying to kick, but only marginally. keep caffeine intake to healthy levels please, or your ears will ring! and nobody here will endorse that side-effect, I hope.