transferring rental to LLC: warranty deed or quitclaim deed?

[Victoria Church]

Hi - I am wanting to transfer my rental in Washington State to my new LLC for asset protection. Should I use a quitclaim or warranty deed? There is no lender involved. I have read about the benefits of each but don't understand what is best in my case (https://www.rocketlawyer.com/article/what-is-a-warranty-deed-vs-a-quit-claim-deed-ps.rl). My novice understanding is that a warranty deed seems to offer better title guarantees if in the future I should choose to sell the rental. Is this accurate and will this matter to a future buyer? I also wasn't clear whether a warranty deed could trigger property sales taxes. 

Thank you so much. I am new to this forum.