Interesting, so if is pretty far off, I would hate to spend the extra money. I know working in I.T. things change so fast that I generally try to buy more than what I need at the time.
I guess buying the WS1065 would be fine for now, and if they change in the next five-ten years (doesn't sound too probable), we would need to buy something else.
Are there any other differences between the two that would justify the extra cost (beyond the Phase II)?
The "equivalent" Uniden model to the WS1065 was the BCD996XT. However, that has been discontinued. You may still be able to find one at a decent price, but the 996P2 is readily available.
Both the WS1065 & the BCD996XT handle the same system types (the 996P2 can also handle those, plus Phase II, which it appears you won't need very soon based on the above information).
The 1065 uses "Object Oriented" programming, whereas the Unidens use DMA (Dynamic Memory Architecture). The reader['s digest version of that is that the scanners are programmed in different ways, but the end result is that either one will get the same systems.
For the 996XT (or 996P2), you can use FreeSCAN to program them. As the name implies, it is free to use, though donations are accepted. ARC-XT and ProScan are also available. While both do have a 30 day free trial period (try before you buy), after 30 days you would need to purchase a license for either of these you wanted to keep using.
For the WS1065, there is no free software. There are three software packages that work for this scanner- WIN500, ARC500, & PSREdit500. All have free trial periods, but past that, you'd need to purchase a license.
There is a bit of a learning curve for either system, whether Whistler or Uniden. The software packages work well, and as you are a premium subscriber, downloading what you want would be relatively painless. Some people prefer the Object Oriented system used by Whistler, others prefer Uniden's DMA. But either one does get the job done, just in different ways.