EO in black bottle is my most often used QD. Very versatile QD that while not the best in any situation, is the best OTC QD. Sonus Acrylic Spritz (on Klasse) and Pinnacle Crystal Mist (on Souveran) are much better in looks but I wouldn't use them just to take off dust/dirt, bird poop and polish residue. EO is also the easiest one to use as it takes the least number of wipes to remove.