Melee weapons

While talking with a friend last night, he asked me:

"If you had to fight and could only have one type of melee weapon, what weapon would you choose?"

I originally mentioned I would use a longsword due its versatility.

He mentioned he would choose a crowbar or a baseball bat. I said that his choice makes more sense since there is a smaller learning curve towards using a crowbar or baseball bat.

Since that point, I have changed my answer to motorized chainsaw. It seems like it would be easy to manage and good for offense or defense.

These are important questions people.