I personally think "who the fuck cares, you STILL lost!"
Good HP per liter, doesnt cost me as much to go fast, I get better gas mileage, I have a better HP/weight ratio y0, my cams are from JDM NOS....blah blah blah, some of this MAY be true in certain cases, but if you are modding a car for speed, then dont pick something slow and end up making it slower because you dont have the $$$ to hang with the higher HP guys or actually get power out of it..
Got a car that can rev to the moon? Great! You'll have that much less low end if (and when) you drive it around daily, need a lighter flywheel, different tranny stuffs, etc. etc. So you can rev to 9k, wow, I can make that power at 4.5k!
Just IMHO.
Also, saying how much it costs you to fill up a tank is like saying "I have a wooden fence". Whoop de fucking do! You could have a 2 gallon tank for all I know! It doesnt matter how much it costs to fill up a tank of gas, just how often you need to do it at that price.