My V6 has the 3.31 and 3rd gear is the monster gear....if you are going over 40 and want to do a passing move it just comes alive @ 4k rpm and by the time you have passed the 2nd car you are at 70+ mph. I imagine 3.55/3.73 are more fun but haven't tried them. No matter what you do the V6 is sedate below 4K rpm which is what gives you decent mpg...you need to keep/get rpms up and not be afraid of dropping down 2 gears when passing. I would like to try either of those two choices.
I will say I've driven the V8 a couple of times (and good drives too) and the torque advantage is huge...what the V6 pulls like in 3rd the V8 will do in 5th. See also sound & respect