Ive played with downdosing and up-and-over dosing. Personally, I think that each SO/blend has their own sweet spot or spots, depending on what youre trying to get out of that particular bean.
Theres something to be said for sticking with one bean for a while and learning its intricacies.
The advice I give myself is to play with the variables and decide what I like best. 250 grams often is not enough to really get familiar with one bean.
I will say though, I hate soggy pucks, even if the shot itself is ok.