For what it's worth - I'm running 55w halogen bulbs, and I'm not all that impressed. They're not much better than my stock headlights on high beam. The one nice thing is I get more visibility to the sides... but that's not what I was trying to do.
Last night my son & I were having a discussion that I think I'd like to repeat here - primarily because of that "I'm running 55w halogen bulbs".
You really need to consider the type of lamps you're using - fog lamps, driving lamps or spot lamps - each style will typically take the same 55w H3 bulb, but each type is designed to do a different job, and will have a different reflector and lens design.
Fog lamps have a wide beam pattern with a sharp horizontal cut off, the idea being to shine through the fog below the driver's line of sight and not to reflect off of the fog back into the driver's eyes - these should not be mounted above the driver's head, and should not be used in conjuction with the high beams, as the high beams will typically reflect off of the fog, so that all the driver can see is an impenetrable white mass in front of the vehicle. Fog lamps will typically give good visibility to the sides because of the wide beam pattern.
Driving lamps have a narrower beam pattern with a less pronounced horizontal cut off - these are intended to supplement the high beams and will usually light the road ahead noticeable further than your high beams.
Spot lamps have an even narrower pattern than the driving lamps and typically will be a round beam - ie. no horizontal cut off - these are intended to illuminate objects at extreme distances.
Unfortunately there appears to be a wide range of lamps on the market which are designed more for fashion than function (these tend to be the lower priced units) I've seen several with no scientific design to either the reflector or the lens and at least in my experience they just scatter light in a general forward direction.
If you want a decent lamp you'll have to buy based on brand - Cibie is good, the Oscars and Super Oscars have been the main stay of perfomance rally drivers for decades, I've also used Marchal Equilux which were simply phenomenal.