Hi, I got a Vanquish 340 on a whim before a trip to the beach in July. I am in Miami for a while but my vanquish 340 is in Atlanta. I see a lot of discussion about the 440 and the 540 on here, but not much about the 340. I am wondering if it is worth having someone mail me the 340 or if it would be better to just get a second 340 (could share with a friend) or get a 440 or 540. I am very new to metal detecting and I have no idea if the 450 and 540 are that much better. The 540 has Bluetooth but I am not sureif any of their headphones would fit my little head. Any ideas?