Hi everyone ! This my first post. I've been shaving with Open Comb DOVO DE razor for 7 years. Recently I purchased a DOVO straight razor 5/8 half hollow, survaived my first shaving with a few nicks The difficult part was the mustache area.

I'm just wondering what are the pros and cons of 4/8 razor vs 7/8 or Half Hollow vs Extra Hollow ?