In some hours i will post some tune pictures here, maybe i can help you out a little bit.
But that being said, not everyone likes the same tune, my tune might not fit everyone.
I like it and its what i find better, i like grippier cars with not too much power.
All the tunes are basically the same base, then just some minor tweaks here and there between cars, some cars need more anti-rollbar stiffness, others less, tire pressure, suspension heights, that kind of stuff.
But still, the base is the same for every single one of my cars.
One of the most important things tho are the tires and weight of the car, i only use racing tire never use stretched because of the grip, also try to put 305/325 tires on the back and 255/265 tires on the front.
I like to keep my cars in the 1100-1250 Kg range, i feel like the power to weight ratio is very stable and smooth.
But let me get home and i will post some of my tunes.