I purposely target my negatives to print well at at Grades 3 to 4. If I miss and need more contrast I can head up to 5. I RARELY print below 3. In order to achieve this I OVERexpose and UNDERdevelop.
I do this because I believe Ilford MG Warmtone fiber paper looks it's best at the higher grades. The negatives are also fairly easy to print.
I will burn with Higher or Lower grades as needed.