they are the most well known, but in no sense are they "more important" than the others.
all 10 Commandments hold equal value. it's not like someone would say "oh, well at least i broke the 8th Commandment instead of the 3rd Commandment" that's like saying "oh, well at least i commited 2nd Degree murder instead of 1st degree murder" either way, it's still murder.