First of all, are we talking about a single member LLC or multi-member LLC? There is a huge difference!
Assuming we are talking about an single member LLC, what is best for you depends greatly on what state you are in. Especially the liability aspects of an single member LLC vs Sole proprietor varies from state to state. In Florida for instance, it doesn't make much of a difference. If you are a one person show, you will be responsible no matter what and your protection from liabilities is minimal. You will be personally responsible if it comes down to that. In most cases, the state will not allow you to hide behind a single member LLC if there is nobody else responsible for your business but you (I was a small business advisor for a county in South Florida. I specialized in women and minority owned businesses)
As far as taxes goes, you have options with an LLC and it all depends on your personal circumstances
There are two things I would do:
A) Don't listen to anybody here, including me. Nobody here knows your personal situation and nobody here knows the latest fine print of the laws of the State you live in. The more you listen here, the more confusing it will get! (apologies to my fellow forum goers)
B) Consult a local CPA or tax accountant. They are the only ones who can give you tailor made advice