The finder is flash forges low end entry level unit targeting the plug and play consumer market . It is designed to look cool at an affordable price . it is made for PLA that is it.
The velleman is designed to be improved and modified . But it is a kit so yes time to assemble wire tune etc.
the z axis screws are cheap standard thread not motion screws.
The wanhao comes pre build some assembly required about 1/2 hour to assemble. Has real lead screws metal bearing blocs IIRC heat bed specked for multiple materials. Has a display and sd card .
My second printer is one of these.
https://folgertech.com/products/folger- … rinter-kit
Is it the best printer or the best kit no. But a decent kit and IMHO a good value if you WANT to build a kit. Kit building is not for the faint of heart . You need to have a good amount of perseverance as well as technical skills.
FT also offers the cloner their version of the often cloned makerbot/ Flashforge creator etc.
a real flash forge is about a $900 the cloner is $380 with dual extruders.
What do expect out of a printer and what do want to put into it.
I have seen posts of people giving up on 3d printers and trashing them and people giving up on kits and offering for sale cheap.
All doable but not for someone who expects magic expect some work, sweat and frustration
What do expect out of a printer and what do want to put into it.
Tin
Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura