Gees, sorry I missed these questions, had some pc issues, and got very busy with life in general. The throw seems the same, while the spread is the variable, also the black ones that have the largest spray pattern also throw a thicker mist, so it seems the red ones are ideal as they have the best spread while not compromising microns... I believe you can make them work with 2 foot throw, but 1.5 is better. The bio-controls have the best throw, unfortunately you have to pray you'd get less deformed ones than my luck had me get... Biocontrols recently emailed me that they were back in full force, and offered to replace my nozzles for free if I sent them in...