So what is different about the nozzles?  

So what is different about the nozzles?

Okay, I will admit, I am a complete newbie at this, and trying out 3D printing without knowing anyone local to me that does 3D printing. I know a few folks online, but for the most part I have been reading a great deal and probably have bought more accessories and toys than I really need. But I have come across something that I just have not been able to figure out. 

Can someone explain to me the difference between the "E3D Prusa Nozzle: High Flow Brass", the "Prusa Nozzle Brass", and the "Prusa Nozzle Brass CHT"? Beyond the price difference.

I have loaded STLs into PrusaSlicer, changed nozzle preset, and did the slicing to compare the print times, but they all appeared the same. So what gives?

While I can understand the difference between the standard nozzle and the E3D DiamondBack, I can't seem to get the different between the others. 

Thanks,

Bob

I just got notification that my Core One kit has shipped, yeah!