Hey there Peter,

I use DH2G and TH2G devices. I have analog and digital of each. It's your choice but I would strongly suggest using the TH2G digital just because the price difference is so negligible.

The digital runs off of USB power instead of a power supply. The digital also runs a bit cooler. The digital will also run analog but the analog will not run digital.

The analog 3 will only run 3 screens. The cool thing about the digital though is that it will automatically detect how many connections you have and run that many monitors.

I started using the 3 to run 4 screens on a mac with 3 on one output and a single monitor on the second output. I have changed this though and I now use 2 TH2G boxes configured to output 2 screens each and still run 4 outputs and everything works perfectly.

My system also consists of Thinklogical Vis-30. These are the most expensive of the DVI extenders but they also have eproms to store the DDC table so that my computer always recognizes the devices attached. They also have a local DVI out which I hook up to my local monitors so I don't need to run splitters.

There is another possibility though. Matrox makes a product I have been interested in using called the Veos. The check them out, they seem cool. However, the cost for the Veos is made up for using thinklogical boxes.

I am working on an installation application and I will probably use the Veos boxes. However, for most all Catalyst enviroments, I want the Thinklogical Vis boxes.

There are other assorted threads on these products. What I can also mention is that there is another expert on the forum who has offered some very legitimate negative impressions of the thinklogical boxes which carry some weight.

Check them out. If you have more questions, feel free to contact me.