Very true the PIV is an Amazing graphics card and the RTG by far makes up for the SD/FF not being quite as good as the Indivision (Although it is very very good).
I originally wanted just a SD/FF like the Indivision, but since none of the Indivisions are compatible with the A4000T i decided to go the whole way and get the PIV which i am so glad i did, because i can see the Amiga do so much more with much more speed than i ever thought possible on an Amiga.
I also had a ScanMagic SD/FF but that wouldnt fit either.
@Crumb
3) Picasso IV scandoubler has similar capabilities in that it can scan rate convert too. No doubt that it is inferior to Indivision AGA but the PIV's RTG more than makes up for it.