Well, I'd agree with their choice of album. Keepin' the Summer Alive is still the worst Beach Boys album.
I thought MIU held that title from the classic lineup BB's?
From the "classic" line-up, I'd say 15 Big Ones.
Although definitions of the classic Beach Boys line-up can be debatable. Like I'd say their classic line-up would include Brian, Dennis, Carl, Mike, Al and Bruce because they made their best music with that line-up. Then there are people who say that Brian, Dennis, Carl, Mike and Al are the classic line-up. So it's debatable which one is the classic line-up.
With the classic line-up I agree with, it would be KTSA, the last one with Dennis.
From any line-up, of course it would be SIP