Richochet,
Sorry for not responding sooner. The 4000s I have are the Rallye 4000 - Eurobeam. Check my original response to your post for links to Susquehanna Motorsports in PA - that's where I found the best price and service.
As for light output, the Eurobeam is closer to a driving lamp - a nice combination of distance and width. The Cornering lamp appears to be just that - immense amounts of light up close and to the sides, the Pencil beam with through light from one side of the U.S. to the other. And the Fog is a fog. If you are interested in these, give Ken Beard at Susquehanna a call or email him. He sent back long emails to me describing the differences in lighting patterns, and even gave me precise measurements over the phone before I committed.
As for the SUVLights site, I was just making a comment about what another member posted - I'd never heard of that site before.
As for PIAA, I think you'll find many people who will never spend another dime on that stuff. I too once spent way too much money for some PIAA Super Plasma bulbs for my Subaru 2.5 RS that lasted maybe 6 months - and were horrible in the rain. I have looked at PIAA lights and for the life of me can not understand why they charge so much for the lamps - the construction is flimsy compared to the 4000s. IPF, which I think is somehow connected to PIAA, also charges super high prices for their equipment - yet buying $300 off road lights that have a thin aluminum shell and crappy mounting makes no sense to me.
If you're interested, email me and I'll copy some emails to you that I sent to another forum member. He went on to install the 4000s on his '99 4Runner and is happy with the outcome.

Andreas