, when new technology is released the older tech will reduce in price e.g. When the spiritual successor to the Q6600, the Q9650 (not to be confused with the QX
9650) is released in Q3 2008 then you should see a price drop for the Q6600 as demand is reduced by people shifting to the 45nm architecture enmass as happened with the Q6600.
imo the Q9650 will be as popular (if not more so) than the Q6600 given that the 9650 runs at 3.0 GHz, has a 1333 MHz FSB and 12 MB of L2 cache for a projected price of ~$US500 compared to the QX
just my two cents worth
Gives you longer to save up too and who knows what new m/boards will be released in the next six months.
I guess the main factors are whether you want "cutting edge" and are willing to pay the price or buy "one step behind" and pay a possibly reduced price