Well after understanding the Fake/original (i don't know) ZD917 was kinda crap i decided to try out the ZD985 and ZD987 (even manufacturer replied me these models are much better and improved)
ZD985 features a SMPS while ZD917 features classical transformers. There is no more hot glue trigger happy workers there so the units are clean and nice. The ZD985 is amazingly compact and i suspect the longevity of that SMPS without any cooling. If you don't have a big bottle of nerve pills in your pocket please don't disassemble the ZD985

However these both units work from start and work quite good. The vacuum is finally inside specs, pumps are still loud (but not as before). The pencil iron on the ZD987 finally has much better and flexible cable. The heaters are also better and desoldering even heatsinks and heatsinked components lasts only a moment.
After desoldering a whole box of components quickly and clean i understood i never want to live without this tools anymore. The ZD985 will be in pair with HAKKO FX888 while the ZD987 will be stand-alone soldering and desoldering tool on second bench.
I can recommend them, you get a whole bunch of spare parts (not that will you need any soon) and when you suck solder only 1 time with this kind of desoldering pump you will never return back especially if you like to recycle electronic components.