I've been looking into the best styles of beards, what do you think.
I'm not sure what would be best. The opinions on beards and facial hair seem to vary widely depending on culture or time period. And often fall in and out of fashion. 
I like the beards that are very full and well groomed, people look like viking warriors with those beards.
Yeah some people/cultures do, while others think that they make you look like a savage or have poor hygiene.  Others like i'm sure the vikings did viewed it as a symbol of a man's virility, exemplifying such virtues as wisdom, strength, sexual prowess and high social status.
Right, that is probably why so many old wise men are displayed with large powerful beards and not clean cut. 
Supposedly facial hair is a vestigial trait from back when early humans had hair on the face and entire bodies not unlike hair on gorillas today. 
Now if we had as much hair as gorillias do that would be pretty wild. That would definitely look savage.
Hypertrichosis, is a condition where people can grown hair almost over their entire body. Like a werewolf almost, you should check it out.