IIe Analog RGB - rare, unpopular, both?

[pitz <pitz.wong@gmail.com>]

I recently sold off my Apple IIe to someone who will probably use it
more often than I would (since I use my IIgs more than the rest of my
Apple II stuff).

Included with what I sold is a Taxan RGB card.  There's not a lot of
information I could find, but from what I gather, it is one of the few
analog RGB cards for the Apple IIe.  There was a mention of Applied
Engineering having two different ColorLink daughterboards (one analog
RGB and one digital RGB) for their RamWorks card.  There is that
document from Marco Orlandi that describes how to wire up the digital
RGB card from Apple (Apple 80col/RGB card) to generate an analog RGB
output.  And then there are the Taxan cards.  And the Second Sight
cards.

I've read that a lot of games were developed with the composite video
output in mind, so using RGB is not a lot better.  I did try to run a
program (II Write) a few weeks back and the difference was very
evident.  I am not certain what resolution it used, but RGB output did
not exhibit the ghosting effects evident in composite output, and the
text in the menu bar was very sharp.

Why hadn't Apple made an analog RGB card for the IIe, noting that they
chose to have the IIgs generate analog RGB output from its video
port?  Is there a difference in quality between digital and analog
RGB?

/Peter