I have been using the small coinstrike coil(5.75") for about two weeks.In the normal trash infested places I have been hunting,I like it much more than the 8" coil. Round rusty washers/steel bottle caps,were much less of an issue.At one point I was scanning a surface rusty round washer,not hearing anything thought my machine was broke! I have been digging more shallow nickels with this coil,they seem to hit dead 9,10,11. pinpointing is a breeze.Target seperation is very good,and it's easier to swing. I am going to leave this coil on for normal coin hunting ,and use the 8" for beach/relic hunting. I know ground coverage/depth will suffer,but sanity is well worth the price. In the early 90's when I first started detecting I was approached by an oldtimer,He said he used to detect all over in Fairmount park Philadelphia. This was in the early/mid 70"s,before all of the restrictions of today.He used an old coinmaster. He asked if I would like to come by and see his collection. When I saw his collection,my jaw hit the floor.He had jars full of silver.Seated,barber,standing,walking,you name it.So many mercs/rosies/indian head pennies it was mind boggling.He then asked if I wanted to see the "good stuff". He had a cigar box with capped silver coins,half cents/large cents, King george coppers,spanish silver,and gold rings. I asked the normal next question..Any gold coins? He had found one $2.50 indian,but it was mangled.He did sell it whan gold skyrocketed in 1980. I asked him if he had any tips,and he preferred to use a 6" coil and let the other guys swing the big "dinner plates". aaah the good old days. Happy productive hunting to all.