The answer depends on two factors. First, is the difference in numbers really huge? Is project starving for some extra money at the moment? Or it can stay afloat even with a less sum?
Second, the expertise can be much more valuable in the long run. You have to decide what will be more important in your situation - experienced investor or the extra resources.
Information about how the MVP helps to get investors for startup and what features they will be looking for in your product.