Not a perverted fanboy so Zelda, Rei, and Asuka are out of the picture.
I've already got pretty good vision so I could do without the monocle.
I lose small objects so I don't want the ring.
Repairing Iron Man's suit isn't the only issue. You also need power for it.
Not to be 'high and mighty' but I'm sure my insight is fine. I can live without the toilet.
I'm unsure on how powerful a Battletech mech is. It might arouse problems with governments and military. My life would be at major risk.
That leaves me with a couple of things.
Gabe Newell, who could be a pretty cool guy but I've never met him so I don't know. More selfishly, he's pretty wealthy and would be able to support me living with him without a problem. However, he might not like me and may kick me out.
I've always wanted to make awesome games and I come up with many insane ideas. The keyboard appeals to me a lot but I'm sure people might catch on to me publishing high-end games every year with no staff.
The pill appeals to me a lot depending on one condition. What exactly does it mean by 'your description'? Does it reincarnate my as myself or do I describe something to be reincarnated as? If the latter, this would probably be the choice for me. The difficulty would be knowing when I'm going to die. You pretty much have to commit Self Delete or be told when you're going to die for this pill to work. This makes it very unappealing considering I enjoy life. I'm not going to commit Self Delete just to be a different person. A second life with all my previous knowledge seems amazing but it's far too much risk.
So all in all, it's an extremely difficult decision because the only things that appeal to me have a few risk factors.
Pill. Why? because you dont have to KNOW when you will die, you can carry it with you at all times, and at a healthy age (70-85) take the pill and end your life. That way you learn all the things you could need, and you get a chance to live an entire life again, where you can learn twice as much. Become a master mechanic and make the Iron man suit or the mecha. =/
And then you get hit by a truck at the age of 24.
Or shot in the head from a distance at the age of 36.