Revision. If i could bring a person to time travel with me, it would actully be no one. Time traveling is dangerous, and I do not think that I could really live with someone dying on my little trip to the future, And someone died by their body getting splotched all over whatever I was trying to time travel in, I would probabaly be very distressed, and would not sleep another night. For example if we were traveling at warp speed and our time travel device went so fast down that we were carried by momentum and flew up to the top but the other person crackes their skull at the top and snapped their neck, or a variety of other things that, trust me, are much more gory, I just would not be able to live with that. It would give me nightmares for weeks, and hallucinations, and many other things that would not be fun. And that is only the best of the options.
What if we traveled to someplace where intergalactic police traveled all over the streets and made swiss cheese of anyone who did not follow the intergalactic code with their laser guns, and one or both of us got killed. Either way, that would be traumatic. Of course, if I was swiss cheese, I would not know what was traumatic, because I would be dead. Also, if we traveled to feudal Japan, and there was some unhappy samuria, and we somehow intruded on their business, they would chop us to bacon bits. That would be rough. Bringing somebody with me seems overall like a bad idea to me because in some situations, it would risk their life, and knowing myself, I would not be a very good situation avoider.
And now to the interesting part. Where would I go? This is easy. No question. I would go to the future. I love the future. I love it. I would choose the future over the present. The past. You name it. The future is awesome. I would love to see how humans, tech, and everything that I know has developed from now. Drones would deliver my pizza. I would ride on a hoverboard to where I want to go. I would send hologram messages to my freinds. Heck, holograms could be programmed to walk, or subways could go at warp speed without the riders being violently killed by the train going so fast forward that the momentum pushes them back against their seat and basically busts their seams. The future would be great.
As for what I would travel in, it would undoubtedly be a telephone booth… I LOVE BILL AND TED, FOR GOODNESS SAKE!!!