Here's an "un-talked-about" image size issue in SI discussions...
Structure image ratio size ...SI vs 2d
In my 1197:
A brushpile that shows as the size of a golfball on the 2d screen...shows as the size of a quarter in the SI screen...
In a 798:
That very same brushpile would show as the size of a quarter on the 2d screen...but show as the size of a peanut in the SI screen...
Structure images are roughly 1/4 size in SI as to what you are used to seeing in 2d...And if you "split" the screen... Structure images are smaller even still...
Here is a 3-way split view from my 1197 ...notice how small the brushpile shows in the SI view as compared to the 2d and DI view...

(This issue can be adjusted
somewhat by lowering the "SI Range" setting or viewing 1 side only)...
Buy the biggest screen you can afford...Unless you want to look at "peanut sized" brushpiles in the SI view...
Rickie