Hey Mike,
TSX's are sort of medium-sized. S2000's are pretty small and some people think they are better than TSX's. It's a bit subjective, though; they have a totally different cutoff, especially on the sides, so it's kind of personal preference. Light-wise, they seem about equal to me.
Well, for starters, here is a projector that is extremely better than a TSX, in terms of width of the light output, It is the LS430 Projector:
More pictures can be found here:
http://www.hidplanet.com/forums/viewtopic.php?t=34106
Here is a direct comparison of a TSX(Top) and a S2K projector(Bottom), Notice on the S2K output, the light is brighter in the middle and more light is focused right at the cut off. This translates into a brighter output further down the road which counts

Dont get me wrong, the TSX Projectors are still pretty good, but there are projectors which are cheaper and can output better light. Also, I read on HIDPlanet that TSX Projectors cant handle 55watt ballasts that good. Even if you use OEM Bulbs such as Phillips, the projector bowls still end up getting burn marks. If you are using 55watt ballasts with non-OEM bulbs, its just asking for trouble 0_o
For more detail about this comparison and other output shots:
http://www.hidplanet.com/forums/viewtopic.php?t=46508
And here are output comparison of Projectors which are slightly cheaper than the S2k Projectors, they are the RX330 Projectors (if lucky, $75-80 on ebay):
http://www.hidplanet.com/forums/viewtopic.php?t=50855
I just purchased these on ebay, simply because in a SUV or a Truck (putting them on a avalanche) you dont want bright foreground lighting (right in front of the truck).
I have the Morimoto Minis in my 04 Denali, with the high beam solenoid tapped into my high beams for quad high beams. It was a tight fit and i had to cut the aftermarket reflectors i purchased to make projectors sit further back. After a few night road trips from San Jose to Las Vegas, I must say that the bright light in the foreground worsens your night vision because your eyes tend to focus in front of the truck where the brightest spot is.
There will also be S2K-R or S2K-Replicator projectors coming out sometime this year, made by the same company who introduced the FX-R (FX-35 Replicas) and the Morimoto Mini H1 and Mini D2S Projectors:
http://www.theretrofitsource.com/
Hey Mike,
You could check out these Morimoto Mini's from The Retrofit Source. I don't know much about this particular projector as it's brand-new to the market. I am probably going to get them for my fogs by next winter, before the darkness comes again.

I'd have to figure out how to wire them into the brights, because they are bi-xenon.
You should check out Micro DE or Blazer Fog Lights. The blazers already have a flat cutoff and all you have to do is turn the bulb upside when using HID Bulbs to give a proper output. Do a search on HIDPlanet.com for Blazers and you will find a lot of results, some with output shots comparing the 2 lights. Blazer fog lights can be found on ebay for about $45