I disagree. A 500g stick is far from heavy, it's just heavier than a 400g stick. Balance is just as important as weight. Grab a 20lb sledgehammer and simulate stick handling, then turn it around and try again. Tell me balance point doesn't matter. It's an extreme example, but illustrates my point quite well.
An extremely light stick might work best for you, but for others like myself, there is a point where a stick becomes too light. Personally, I have found that the True A5.2 and Nexus 1000 have felt much lighter than the actually are because of how well balanced they are. On the flip side, my QX3 feels as heavy to me as a Supreme One.7, which is almost 100g heavier. The QX3 is not heavy, but it feels heavy when I use it because the balance point is too low for my liking.