Just curious what people's preferences are. Personally, I can't understand why you'd prefer to open every block of PHP with <?php as opposed to <? other than it maybe being more understandable for beginners... maybe being more obtuse helps? At the same time, how hard is it to get used to <? ... I mean, it actually matches the end tag then, which is common to every other usage of tags in other languages.
Maybe I'm biased by syntax highlighting. <?php and ?> are rendered in a bold red in Dreamweaver, so <?php all over the screen is frankly just distracting, too!
Anyway... your thoughts on this oh so important topic, please.