I have most always used these.

1. They help you cast alot further if need be and help accuracy under overhangs.

2. If windy you can cast into the wind with them due to the weight.

3. Fish take them down a bit easier IMO.

4. If there is alot of chop your bobber will not drift in as much as a non-weighted one. Big plus for minnow fishing around laydowns and brush.

For bed fishing big gills use the cheap ones but for everything else the weighted ones are the best!!!