Just like with car engines you are paying a steep price to have a Pentium M processor near the top. In my opinion the Pentium M 730 1.6ghz is the best value but the Pentium M 740 1.7ghz is also in the mainstream.
The 750 and 760 are only incrementally faster but you are paying a much steeper price to upgrade.
This is a comparison on whether you want the BMW M series or if a BMW 330i will suffice for $10,000 less .........
I'm configuring a system and would like to know whether to purchase the 740 or 760 M. The price difference is 110 and even though I don't do any processing intensive operations, I do need the laptop to handle my workload for the next several years.