Both of those I recommended are heads and tails better than a Zalman 9500. The 9500 is a four year-old design, already three generations old.
If installed correctly with good thermal paste, both V2 and Sunbeamtech are good for at least 10-15C better under load than the 9500.
You will also see people recommending the Scythe Ninja - another good choice, at least their latest version.
The Thermalright Ultra 120 Extreme (acronym "TRUE" - apologize for the guys to lazy to spell it out for those just learning). It's great, but is expensive and often is only mediocre if you don't modify it. NOT recommended for those purchasing and installing their first aftermarket CPU heatsink.
you think the OCZ Vendetta 2 CPU Cooler is good for a q6600?/QUOTE] Yes, check system number 4 in my signature: Q6600 overclocked to 3.5/3.6GHz full load 24/7, room ambient is 74F - current core temps are 54-57.
i would actually save money by switching it out! lol. any other suggestions?