Do not rush things. Do not rely on what someone on the internet says. Play as many games as you can at arcades or shows. Eventually you'll know what you like. Then be patient to wait on a good deal. Buy from a reliable source, either locally (best) or pinside or e-bay where the seller has good reviews. Locally has the advantage that you can actually play the game before buying it. Also saves transportation cost but the market might be very limited.