How important is a glass rear window?

[Finnegan]

Hi all,

I'm hoping to join the ranks of Boxster owners sometime in the next few months. It will be my daily driver. I have been limiting my search to the later models with a glass rear window, but maybe that's not necessary? How would you rate the importance of better visibility out the back, and the added convenience of not having to do the Boxster Karate Chop when putting the top down?

Thanks!