Choosing my first Delta Printer

[curious aardvark]

okay - well if you don't use abs (and really why on earth would you ?) then print the parts in pla and they'll be fine as the bed only ever needs to be set for 50c :-)
Abs is only good for up to 60-65c anyway.
Pet-g will go to 65-70c

I've yet to find a levelling guide that makes any sense - so can't help there. I just level mechanically. Suppose i ought to learn about that side of things.
The he3d guide I tried to follow just made no sense whatsoever and didn't do on mine what it did on theirs anyway.

I've so far nor messed with my firmware - as I mechanically level, not felt any desire to.

If you finda system that works and is comprehensible - please post it and I'll have a go :-)