As with the Beatles' ''1,'' the career-spanning 30 #1 Hits is intended as a one-stop-shopping intro to Elvis. It does the job but, like the Fab collection, suffers from the same flawed concept: Chart-topping success doesn't always mean quality. So, along with all the expected standards (some sporting richer, more bass-heavy sonics via a digital upgrade), we get the hideous polka pop of ''Wooden Heart'' instead of powerful non-No. 1s like ''Kentucky Rain'' or ''If I Can Dream.'' Then again, Elvis' career didn't make a whole lot of sense either.