with the Tomo board its REALLY important to continue playing the volume game. Please please please take other reviews with a grain of salt because they are customs. This means much different length to volume ratios.
It is imperative to continue getting the right volume for you. End of story. progression in shape DOES NOT mean that you all of the sudden should ride 10% less volume. While the Vanguard does do things other shortboards might not, its important to not get carried away. You can play around and maybe go with one that is at the lower end of you volume range, but if your volume lands you on the 506 DON'T get a 502 based on some of these other reviews...