I use IV as well and find it more useful than PP.
What level of detail do you want?
Is this for street or terrain?
“Street” most often.
Occasionally, I go “in” to max zoom on Google or Bing. I think the Rand McNally site may match that - haven’t checked closely yet (busy with family and responding on my thread tonight!)
I also haven’t checked all the other suggestions, but, the Rand McNally site MAY be the most practical answer at present...
I just tried a fairly high zoom on Rand McNally (local streets trace out in dark grey “outline”); screen captured that and pasted the image into IV; then color corrected with gamma @ .37 and contrast and saturation cranked up a bit. Looks promising, except bodies of water are going to be pretty dark. Definitely better than Google, for printing.