Unlimited money. Several reasons.
1) I don't want to live forever.
2) I would love not having to work. Unlimited time just means I'd have to work forever.
3) Money is one of my biggest worries. I save more than average, and I'm not in debt, but I still worry that something will happen and I'll be trapped with the money I have being tied up in various investments (I'm illiquid).
4) I believe in life after death, so, in a sense, I alredy believe that I have unlimited time.
5) Ignoring the implications of truly "unlimited" money (e.g. severe economic destabliization and a one-man cause of hyperinflation), I could do an awful lot more good in the world with unlimited money than I could with unlimited time. I could fund schools, medical programs, feed the poor, etc.
6) I would have all of my time free to explore whatever I wanted.
ZV