Readability/Organisation > Speed.
 

As once quoted from WildHoney :)
Do you agree :)?

I do, for the fact, I can never tell if anything loads faster or not. Also as long as everything is clean and organized, what can possible go so wrong?

Readability for sure. Especially when your doing work for a open source project..

I like to muddle up the code just in case somone might want to ever change it in the future, so I go for speed.

Functionality > Readability/Organisation > Speed

I guess that is what I would say. First make things work--get it done, then make it look nice and speed it up.

However, don't get lost by overorganizing stuff. It is no good. No matter what, your code will probably look outdated a year later. Also, speeding up code will often beautify it at the same time.

True, I hate how when I look at my old code it looks "old" :P, guess that means I'm learning new techniques.

Agree for sure, And by organization you can maintain your code to be faster.

Becouse when you gather all the functions and variables to classes, it is much easier to make it work faster.