I would buy a 4000Di, if it meant that I WOULDNT lose the Arxon Scandoubler. (Nice scandoubler BTW).
So.. No scandoubler, No 4000Di.
And from memory, with the 4000Di, you cant play games without a scandoubler on the 4000 with PC montor, The Voodoo will only output Workbench, so you still need a 15khz monitor on the Amiga.