If the D020-d was as easy to maintain as the FC-mod or had a decent bend in the neck, it would be my daily driver, but the FC_mod + interchangeable parts + dishwasher maintenance gets the win, by a hair!
That being said, I have contacted Yingchin5 about getting the following with a very pronounced bend in the neck of it so it is easy to use while reclined, it is a great cheaper unit, it does not say it is a D020-d, so maybe it`s a knockoff of a knockoff(pics look identical) ;
https://www.dhgate.com/product/new-...ng-glass-smoking/199386677.html#mfavit-7-null
He told me to just leave a message when I buy, he said to say,` Make sure it has a good bend in the neck' and they would pick the appropriate one for me. If you are going to use on a table etc, forget what I just said.
The FC-186 would shine with something like a Plenty or Newvape Vrod/SH, more free flowing vapes, that is just a guess, I have the same perc but a single in my sidecar and that is what I am working off.