Which kindle of the ones available would you buy if money is not the issue and why?

You have plenty of money to buy it in bundle and with all the bells and whistles, I just want to know which one would you choose and why. Why would you pick the one with the color screen? or the scribble? Thank you all in advance for your opinions.

EDIT: I do not live in the US and the only library available is Amazon and the only e-reader available is Kindle. I appreciate your opinions on other e-readers but I have no way of verifying your claims as to which other brand is better than kindle since the only brand I can buy IS kindle. Thank you again for the time in reading and replying to this post. Have a great day!