I prefer this version because he has a REASON to time-travel.
I thought it gave the character more depth and drive in the 2002 version because he has a reason to time-travel. No spoilers here, but I'm sure you know what I mean.
I thought it was a necessary plot point for this day and age. In the book and the 1960 film it's just 'I'm an inventor so I made this'.
I like what they did with the Eloi's too, making them look like an indigenous race and not giving them 60s-style blonde hair with pink dresses. Not trashing the old one, by the way, I did enjoy it but I just prefered the new. Okay, I am bias. I mean...it's Guy Pearce :)