It depends on what types of fruit and veggies you'll be juicing. Masticating juicers like the Omega and Champion are better for leafy, dry veggies like kale, chard, etc. It wrings the moisture out of them. They are also very quiet. The centrifugal juicers are better at the fruits and veggies that are more wet and gloppy to begin with like cucumbers, citrus. They are loud and people claim that they get too hot which kills some of the nutrients.
I have an Omega and I use it two to three times per week. The other benefit of a masticating juicer is that they usually come with attachments to make pasta, etc. Mine has a mincing end that works like a charm to make a sort of blueberry ice cream. Just mince frozen fruit and you get a sorbet like dessert.