Scandoublers work just fine. It cheapest way to get good picture with amiga.
Second change is buy one of those "millon dollars monitors" which can show all amiga screen modes PAL-NTSC-DBPal-DBNTSC-Super72.....
If money is not issue I think that is best choise.
I have old Nec 3D which can do those screen modes but is only 14 inch
But it coast to me only 40 euros :hooooo
If you are able to get 68040/68060 accellator to your A1200 you woun't repent your purchase.
PS. I'll buy AmigaOne as soon as I can get one, I work with PCs and I don't want to have one in home