I think the answer is yes, some of us run a different temperature every day.  Myself included.  My temperature at night drops to 77 degrees.  That's what my heaters are set to.  I run halides so during the day my temperature will gradually rise to about 80 degrees.  This is during the winter months mind you.  During the summer the house is a lot warmer so my upper temperature will go up to 83.  As a result I try to remember to raise the lower end of my temp to 79, this way there's less swing.   
 
Having said that, I have no clue what would give "best results".  I suppose "best results" can be variable as well.  For me "best results" is when things don't die. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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