XML vs Arrary based grid

Hello,
Please suggest the comparison for Array based vs XML based Grid.
Below are my findings for 50,100, ..., 2000 records in secs.

As the records increases to 1000+ it seems XML based grid (with Async false) is having better performance as compared to Array Based grid.

Recs 50 100 200 400 800 1200 1600 2000
Array 0.25 0.266 0.266 0.291 0.344 0.344 0.375 0.422
XML 0.281 0.313 0.313 0.312 0.328 0.329 0.344 0.344

Any suggestion which technique should be used when are the records are increasing?

Best regards,
Amber

Any suggestion for the above Question ?

Best Regards,
Amber Gupta

Amber, what are you measuring exactly?

I always had the impression that using javascript array is 20-30% faster than XML. This applies only to producing html string as parsing and rendering should be the same in both cases. However this might be very different in different browsers.