The View's sound quality is par, about as good as the iPod's. And while the idea of 16GB at $200 is quite alluring, you'll get the best listening-experience with the Zen. Creative has always been hailed for its excellent-sounding players. The Zen is no exception. In fact, the Zen is actually considered an audiophile mp3 player (meaning it's the cream of the crop when it comes to sound).
As far as pros and cons, the View has better tech specs, but the Zen wraps up its features in a nicer package. The [supposedly] has gapless playback, a better price-to-gigabyte ratio, H.264 support (better podcast support), and a longer battery life.
But like I said, the Zen is a nicer package. First, the stability of the firmware is questionable (the e200 series can attest to this), whereas reliability with the Zen is not an issue. Second, sound quality on the View is iffy whereas SQ on the Zen is superb. Third, the graphical user interface on the View looks dated, while the GUI on the Zen is great (Apple copied the Zens' interface), and you can even customize the background image. Fourth, the Zen is more pocketable while the View is relatively large for a flash player. And though the Zen depends on proprietary software for some things (such as podcast's [which they call zencasts]), the View depends on proprietary software for everything. You need to transcode most media with the View whereas the Zen, you only need the software to handle zencasts and DivX movies. Otherwise, go nuts with WMP11.
The only glaring issues with the Zen pesky SD card slot issue and the need to transcode DivX. With the SD card slot, the memory does not integrate with with the main library. So you have search info on the SC card separately from the music on the player itself. But most people assume that this is a firmware issue, and will be repaired soon.
So all in all, the Zen offers the best audio experience.