The old phat ones are usually real good. SCPH-39001 are good (thats a version 7 i think). I got a SCPH-30001R though (version 5). But it hasn't been softmodded so i couldn't tell ya about this one.
Also i wouldn't mess with a test version (debugging station). I'd just sell that, since they are def worth some cash.
Some info: "As for the DTL-H series you mention.........these are all debugging stations (the covers have TEST printed on them NOT PS2, like a retail one). The DTL-H10000 is a debugging station for the Japanese market based on the SCPH-10000 style (i.e no expansion bay etc.).
The DTL-H30000 series is based on the SCPH-30000 series with the expansion bay. There is a DTL-H3010x series which is more advanced (and IMHO the best debugging station around). The DTL-H3010x series was sold with a HDD and network adapter and featured othe radditional enhancements.
The last batch is DTL-H50000 series. This style is based on the SCPH-50000 series (the quiet one with no i-link port). As with ALL PS2 debugging stations, none can play DVD movies. This was due to licensing issues. Apparently it is cheaper for (licensing wise) for the PS2 consoles to NOT play DVD movies. Why would you want it to anyway. The PS2 is crap at playing DVD movies, you can't even use an RGB SCART lead.
Oh and one more thing in case you didn't know..........DTL-H series TEST consoles are multi region. They play anything. Although only the DTL-H3010x series will play utility discs from other countries. The DTL-H50000 series may also, but I have yet to try this.
The last digit on the console model number indicates region. O is for Japan, 1 is for Americas, 2 is for Australia and Europe.
It is possible to buy foreign versions in other territories though. For example I have a "DTL-H30101 E". This console is NTSC U/C but it features a 240 volt power supply. It is also possible to get a DTL-H30001 in Japan, which is called a "DTL-H30001J" for example."