RB30E is where it's at for daily driving
In saying that, my stocker RB20 R32 with R34 turbo was a good daily drive, albeit slow, unless I revved it out.
Was averaging 9L/100km because in traffic, no boost until 3,000rpm + slow moving = long boring drives to work and home.
In saying that, NEO6 turbo is a much better drive and decently efficient as well (a relo of mine put one in his R31). RB30 with NEO head even more so haha.
Since your other cars have higher powered engines, put a V8 in your R32.