My first and favorite razor is a 6/8 Salem Markos and Brothers that I purchased used. I have also added a 4/8 and a 5/8 to the stable, but I am a big guy that the 6/8 seems to fit my hand great. Also I wear a Goatee and a mustache so I get a break from the trouble areas.
I find it interesting that I have cut myself much worse with a disposable razor than I have with a str8. I also have gotten more cuts with the smaller razor.