I think you mean GHz, Dani_17.
And, I hope your not comparing AMD vs Intel by their clock speeds. Actual clock speeds will vary greatly but does NOT necessarily have to do with performance.
In theory an AMD 3000+ would be the same speed as a Intel 3GHz processor, hence the reason for AMD using the 3000+ PR-rating. (Because the actual clock speeds vary they needed a way to show how the processor "should" measure up to an Intel).
I would go for the 3200+ because obviously 3200+ means AMD is saying the processor should perform like a 3.2GHz Pentium 4.
Also, if you compare the prices it is a no-brainer. You just have to ask yourself "Am I going to pay a LOT more money for a small performance increase" (in most cases your paying about $200 for 5% performance difference). And this performance increase usually depends on what kind of application you are running.
Now if you are rich like some people here are (even though they wont admit it) then it wouldnt matter.