Ted is high on my list of developers, and Synergistic high on my list of value for money. So much so that I am not even sure whether its such a good idea to buy used. In other words he improves his new generation so much they tend to still be good value even in spite of the steep prices he charges.
My approach as a long time SR user is once I have something to use it a good long time, usually until so much else has been upgraded it comes back around. But that's just me. If you are seriously in the market enough to be looking at the next gen next year I would call the Cable Co, or even Ted himself.