That's pretty much the plan, yes. You nailed it. Ironically, with the way the current discount works, _if_ I sell the 600 myself later, I'd only have to get $1k for it to break even versus doing the trade-up.
Knowing myself, I'll probably end up keeping both of them. I just had to come around to making the decision and getting over the slightest tinge of guilt I was feeling about spending the money.
Fortunately, this was a very good month at work... much better than anticipated, which just seemed like the audio gods telling me that I should buy the 800.
Jason
