How loud in DB, Is "cranking it"

Gents;

i just just got a new amp and was Playing my 87 db efficient speakers( Thiel)

My speakers 8 ft apart and I sit 9ft back

I was just playing my amp at "30 watts class A" and I heard 97 db at listening seat.
I normally listen at 70-75 db

I was told the Xa30.5 might not have enough power! In my questions to Audiogon

To me it's WAY more than I need......no issues here. If my amp is considered underpowered, You guys must be nuts!!
lol

So; the question:. 

How loud is " crankin it" for you guys
and
How loud do you normally listen?