I note that Jim Rodgers, who I feel has been very correct in the past, issued a strong warning on the market and said he felt gold will eventually go to $2000. I suspect that if you are a believer, you will either ride it out in BRK-B or go to gold.
It will continue go rise over time as the fundamentals of this firm is astonishingly good. However, when that happens depends in small part on how long Mr. Buffett remains at the helm, does the "culture" continue after he leaves (the unique Berkshire culture is really a big reason why this 'complex' firm runs so incredibly well... Wall Street short term players get a hold of the company, and all bets are off), and how well have they done pricing in potential catastrophes. I agree tho... I think it will get there, and feel pretty comfortable waiting.