Which One Is The Best?

i have been looking around for some "RELIABLE" metal detectors and I have seen these two for now..

http://cgi.ebay.ph/METAL-DETECTOR-g...08_W0QQitemZ200233600232QQihZ010QQcategoryZ171QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#ebayphotohosting

and this http://metaldetectors.ecrater.com/p...hp?pid=57734

the later has a description which is very interesting for me------>>>>>

Sophisticated information like this is invaluable, especially when a detection signal can be attributed to any one of several similarly conductive but different sized objects.

For example, a coin, a screw top and a drink can will all trigger a penny signal. Without size information you have no idea what the target really is until you dig it up.

The GTI's ability to determine a detected target's size takes the guesswork out of the hunt so you don't waste time digging unwanted items like trash.