Thanks for the lesson Dis....
I know all about the clockrate/IPC debate (seems AMDs won that one already, what with Intel scrapping its previous roadmap in favour of the Pentium M processor). Who cares whether they're used to their full potential yet or not? Sure they have extra registers and the like that have yet to be used (get off ya backsides ms + driver developers) but as far as gaming is concerned they beat all comers (bar Intels insane pr chips in certain circumstances).
I'm not seeing the price premium that you obviously are. They seem reasonably priced for their performance in todays applications. What's more, even the 9800 pro is CPU limited in alot of games, so it can only make sense to buy the fastest you can afford.
This all depends on your upgrade cycle (and budget) of course. I like to squeeze every bit of usefulness out of a new comp before upgrading, which could last as long as 3 years. If however you like to stick to a yearly, or heaven forbid, 6 month cycle, then it would obviously be better to go with cheaper parts.