HI @smithnovel
Thanks and welcome! I only have the one Ender 3 from Sain Smart I linked above. I don’t do a lot of 3D printing, but I have done enough to use up a roll of PLA filiment. There are a lot of upgrade parts for the Ender 3 on Thingiverse, I have printed many of them for mine. I also printed the dust collection shute for the meticulous Z axis upgrade to the maslow. The Ender 3 is easy to work on, I have had good results with Amazon brand PLA. The biggest problem I have had was that the gears that move the filament into the extruder were not tight enough from the factory, It took me awhile to figure out and made quite a mess.
Get you a printer, put it together carefully, approach it analytically and you will do great!
Best wishes.