Berkshire Hathaway CEO Warren Buffett (L) and Apple CEO Tim Cook (R)
CNBC (L) | Getty Images (R)
Warren Buffett sang Apple's (AAPL) praises Saturday at Berkshire Hathaway's annual shareholder meeting, saying the iPhone maker is a better company than any firm in the conglomerate's vast portfolio. And, the legendary investor's argument rests on the logic that's similar to why Jim Cramer has long said Apple is an "own it, don't trade it" stock.