What is your objective?

I can tell you from experience that trying to bracket race with spray is a lot of work. Can it be consistent? Yes, but you have to keep really good control of bottle temp and pressure. Not easy to do on a hot day, especially if you get stuck in the lanes by an oil down or such. If it's cold out that brings on another bunch of fun.

Going from 3.55 to 4.10 will not pick you up as much as you'd think.

Another vote for a 360.