I've had the beer a dozen or so times. When it's on, it's a contender for best beer in the world. Seriously, it's that good. However, it seems to be quite fragile, and is often not at its best. If you look at the bottle and see floating flakes, put it back. It will be oxidized and off. Check the date on the cap. If it's less than 2 years old, cellar it. Nothing worse than buying the best beer in the world and then drinking it too young. You don't drink Chateau Latour like it's Beaujolais Nouveau, do you? If you go to the cafe next to the brewery, they often serve it very very young -- disappointing. I had the 8 there and it was wicked hot; looked at the cap and saw it was a month old, duh.
So if you understand the risks, go for it. Also understand that if it's lame, it's not the same beer that people are raving about. In the US, Anchor Steam is kind of the same way. Its quality seems to decrease exponentially with the distance from the brewery.
And yes, save money for a plane ticket. Belgium is worth it. If you appreciate Belgian beer styles at all, it's a must do. Can't wait for my next trip.