I'm posting this in the Newbie section in hopes of getting some interesting discussion that might be helpful to Newbies (or, heck I'll admit it - to me!)
Traditionally, for U.S. coins, I've always considered "select unc" to mean, MS-60 to MS-62, "choice unc" to mean MS-63, and "gem unc" to indicate MS-65.
For myself, I've invented "very choice unc" to mean MS-64, and "very gem" to mean MS-66, and it seems like "superb unc" is used by some to indicate MS-67. I have no idea what to call MS-68 and MS-69, but obviously, MS-70 is "perfect uncirculated".
What are your thoughts? And on the same topic, I have found myself falling into the habit of calling "plus" coins "strong", i.e. MS-64+ could be referred to as "strong very choice". For some reason, I really don't like stating "plus" as part of the grade, perhaps because back in the old days, the ANA grading guide explicitly prohibited using a "+" as part of a coin's grade.
What say you?