And... SPEAKING of which...
I tried out some Turtle Wax ICE this weekend. What I liked was that you can still use it if you can't put your car in the shade (I no longer have that option).
Goes on well, comes off easily. Makes the job a very, very quick one. I like that.

A few streaks, but I think that's because I put on a heavier coat than necessary in some spots. They buffed out immediately.
I was anxious to see if I would still get that all-important beading during a good rain... And today, we got bucketloads of rain. Lots of beading on all surfaces, so no problem there. It's my understanding that it doesn't last as long as normal wax; however, if I can do it anytime I want, without regard for cloud cover, who cares? I can re-polish at will.
The other appealing feature for me: it glosses up any plastic surfaces. On the Jetta, there are quite a few black plastic areas (front bumper/skirt, lower part of rear bumper, mirrors) but here's the kicker... The rubber at the base of my antenna had turned a pale grey over the years. The ICE glossed it right up! It's back to a shiny black again.
Two thumbs up.