i'm new to metal detecting and i'm looking for a decent detector (under $300.00) to start out with, i want to search old home sites and the like and i don't want to spend hours digging up pull tabs. are there any detectors in my range with a good discriminator and on screen display? i've been looking at a bounty hunter titanium, and a bounty hunter sharp shooter ultra mag. has anyone used these machines? i have seen some other models that have an on screen display that shows the (outline?) or shape of detected objects, any good? any and all advice or suggestions would be appreciated.