Have a few years and many hours on both,still have both.. I’ll give my two cents.
At pro is probably the best jewlery machine made.That thing will find gold like no other for some reason.Pretty good on coins too,not a depth demon but neither is the 705.Thing about the at pro is its idiot proof,you could hand that thing to anyone and believe me,they’re gonna find good stuff.Which is a big plus,who wants a big learning curve.
Now the 705.way more tailored than the at pro..Backlight,volume control,noise cancel,prospect mode,threshold,1,2,3 or 28 tones,changes frequency with coil change,well balanced and a pistol grip..those are just a few advantages the at pro doesn’t have.The 705 has very nice tones,and is a great machine,but the at pro is also a great machine.
I’d say between the 2 it comes down to features the user wants and don’t want.In my opinion one won’t find something the other wouldn’t,or couldn’t
.I prefer a 15 kHz machine like the at pro,it hits just as hard and accurate ID on gold and silver.
Not so with the 705,with a 7.5 kHz coil it hits and will ID coins great,but not nickels or gold.ID is very jumpy on nickels and gold.Put a 18 kHz coil on the 705 and it’s a nickel and gold jewlery slayer,but silver coins suffer in visual ID department and in general for even finding them.
Just my 2 cents,if you want a coin and jewlery machine with no backlight or other features of the 705,get the at pro it’s hard to beat.
If you don’t mind swapping coils and are after specific targets like gold or silver,but not both at the same time,get the 705.Not that the medium frequency or high frequency coils won’t find both gold and silver,they just don’t excell at both with one coil,,,..the at pro does
I’d hate to give up either one,both are good.Not so sure I could decide between those two machines,,good luck tho