Thanks for the coments so far. I like the easy operation of extera-305,but i really wonder about a lack of deep finds. Finding a few wheat pennies about 4 inches,and normal chad. Ive been around serveral old home sites,and am yet to find anything over 5 inches. I wonder if a different coil would help?? If the tekneics omega 800 will do it all and rates with the best,i am tempted. Please tell me more!