Six posts and every one is about the same scam artist LED bulb website.
LED lights have potential but without extensive real world testing they are mostly over-hyped and not practical. There are a few that can work reasonably well but they are much more than $59.95 per pair and they don't promise impossible levels of output.
H9 is the most compatible upgrade from H11 since it increases light output without any significant change to the bulb design other than the filament (yes, you have to shave a tab in the connector to make it fit). The difference is noticeable - about a 45% increase in output - but it still might not be enough depending on your situation.
At this point a good HID conversion kit would be the next step up. A good HID kit will give you a little over twice as much light output as the H11 but it means spending $150 or more for a name brand like Morimoto or Diode Dynamics - not a $35 kit from DDM Tuning or ebay. And it involves some lighting system modification, often requiring dust cap changes and relay kits.