As you say in your above post Prep everyone is different and has different opinions weather its grading ,cleaning etc.
Its not a case of me or anyone else being shot down on here more to do with someone else giving an opinion .
In a lot of cases coin knowledge cannot be learned in a few weeks/years and thats why i am always on here as only been collecting about four years myself.
Some on here have been collecting for years .......in some cases lots of years
One thing i will add is copper pennies are best left alone (although suffer the most problems IMO ) as almost everything you do will show from my tests over a few months a couple of years ago.
I just buy ones i am happy with and prepared to pay more..........although not a lot more
Be lucky and keep smiling.
Pete.