I just boguht a 825 servo, amazingly fast. But, when i bought my 5925, the specson the box are the exact same. the 5925 is not very old, and i use the same electronics in both cars, so i know the get the same BEC current, but why is the 5925 so much slower than the 925... i expected more out of the 5925 than the 925 because it was digital, but at the least i thought it would be fast....

It should not be slower. The specs onthe box coule be a mis-print. The speed of the servos are the same .10/ .08 depending on what voltage you are supplying to them.