Juntonio, I was in your shoes once. This is what I've learned. Save your money and buy the best you can afford. If you limit yourself to 500 you're still gonna fall in love with the hobby but, you're gonna kick yourself later and wish you had a better detector than the one you originally bought. There's an old saying about being to poor to buy cheap. I have two excaliburs. I couldn't afford to buy brand new so I searched the forums religiously. I got each for less than half new. Not in the spring or summer either.. That's when everyone is getting the bug and units go for high dollar. After the water cools this fall there will be deals on all the forums. If you gotta have it now I'd get a used Pulse induction machine. You should be able to find one easily for around 500 and below. Now, it's not gonna discriminate anything, but that's ok if you're gonna hunt the Miami beaches. From my experience they are clean and there is not a lot of iron bits in the sand. On the beach even with a great discriminating detector I still dig anything that beeps. After a couple of gold rings and especially chains that the PI excels in finding, then buy an excal. You'll have two detectors in your arsenal that will enable you to hunt anywhere, anytime. Don't forget you gotta get a quality scoop. I'd even go so far so say the scoop is even more important than the detector itself. I envy you, I absolutely loved detecting there. Still have a nice watch I found and my mom still wears a beautiful gold bracelet. The views of the South American women with their 1/2 bikinis is worth the parking fees alone. When you find your first gold ring we will welcome you to the Varsity. Good luck.