Hello,
I'm still very new to 3D printing, even though I've had my printer for a while. I finally have some time to really start using it now.
My printer is a Creality Ender 3D Pro, and the quality of the sample cat was really good, so the first roll of filament I bought was the exact same material, Creality's white PLA: "Creality 3D Official PLA". Pretty much everything I have printed with that actually printed quite well.
I had more trouble with some glow in the dark ABS I picked up second hand locally (new still in package) around the same time, but once I chose the default settings for "generic ABS", the results have actually been quite acceptable.
Then with a couple of recent shopping carts I decided to add a few more colours to my filament options, so I picked up Newark's Multicomp Pro PLA filament in black, red, and wood colour, and a gold e-Silk PLA
I didn't realize that the Multicomp Pro ones have a higher heat rating, from 205 to 225, instead of the wood and gold starting at 190 degrees. For some reason I thought PLA is PLA is all the same kind of heat rating. 
So when I started printing with the new filaments I just haven't been able to get nice prints.
I'm guessing that heat rating makes a difference because the prints feel like they come out with mostly loose straw like layers that fall apart much too easy.
I realize my settings need adjusting, but this is where I'm getting confused - why are there not pre-made settings available (that I can find) ? The cat sample was pre-done (g-code) and ready to print when I received the printer, and it came out perfect. So it was obviously already tuned to work well for the printer and the filament, nothing to do with my own personal location or temperature or whatnot.
All of the tutorials and how-to guides I have found so far say to test with heat-ladders and benchy models to tune the settings, by adjusting things like bed heat, nozzle heat, and fan speeds (and then there's a bunch of other finer details I don't think I'm ready for yet!)
So my questions are:
1. Is there a guide somewhere where I can find suggested best settings for various PLA filaments for the Ender 3D Pro?
2. Does anyone here have experience with (and suggestions for) the Ender 3D Pro and Multicomp-Pro PLA ?
3. What is the reason (if there is one) for everyone having to re-invent the wheel for themselves to find best settings for filaments?
ps, I'm guessing ambient temperature affects things, which is why I always pre-warm the art studio to room temperature of about 21 degrees. I'm not opposed to firing up the wood stove too if that helps! 
pps, Could this also be related to my semi-recent switch to using the Mac version of Creality Slicer (based on Cura)? Prior to that I used the Windows version (not Cura, very specific to the printer).
Thanks!
-Nico
