Two things jumped out in the review, the battery life and performance:
Based on its performance on CNET Labs’ mobile benchmarks, the ThinkPad X series realizes some significant performance gains with its Intel Core Duo processor. Its MobileMark score was 28 percent higher than the Pentium M-based Fujitsu LifeBook P7120’s and 32 percent higher than the Sony VAIO VGN-TX670P’s; the X60s also bested its predecessor, the 1.5GHz Pentium M-based ThinkPad X41, by 28 percent. Those speed gains are enough to notice with average use and will be particularly useful for multitasking. The X60s’s 8-hour, 16-minute battery life is the longest we’ve ever seen–very impressive, though not quite surprising, given that our review unit’s price included an 8-cell high-capacity battery.