The D1000 was HOOVER's last great canister w/power nozzle.  These machines cleaned very  well.  They were made very well also.  They are on the quiet side(incl. the power nozzle).  They were quieter than the Kenmore canisters of that time.  One of the problems was that they were heavy for women.
 
This series sold anywhere from $299-$400 new.
 
This vacuum cleaner is durable as vacuum cleaners go, but all things do break down.  You will need to stock up on bags if you are going to use it w/ your Miele.  It will be much harder to find parts for this machine.  Some things, like the hose, are going to be expensive.  That is why the seller did not purchase the whole hose.  
 
You complained about the filtration of the Electrolux and you may complain about this, because it was made at a time when filtration was not that important.  There are no HEPA filters on this HOOVER.

I also owned one and positively loved it -- passed it on to friend because I was about to go on the road.  My lamentation too is that Hoover abandoned the manufacture of canisters of this calibre.  Nonetheless, inspect all immages of teh amchine provided and ask the sellers all the questions you have to to assure yourself your buying a machine in good condition.
 
Venson