Their are many great polishes out their, however for me it has to be easy to use as well as give a good finish.
Some car polishes can leave a white residue behind, and sometimes will stain plastic and rubber trim, also some polishes can be quite hard to buff off, especially if its sunny.
So at the minuet the one that ticks all the boxes for me is Auto Smarts cherry glaze although you are not really suppose to polish in the sun, I find with this polish it is a lot easier to use in the sun, as long as you polish one panel at a time.
Also it does not leave as much residue as other polishes, they do claim that it does not leave any residue, but it does, just not as much as the others.
Also it is very easy to buff off the car, in fact it is the easiest polish I have ever used, and it smells nice to, hence the name cherry glaze, and finally you know what its like trying to take care not to touch those edges by the bumpers and window rubbers, well if you do happen to get some on the bumpers or the rubbers round the windows it just wipes off and will not leave any marks on them, thumbs up for me.