can't just hit control-plus to enlarge fonts

[Dan Jacobson <jidanni@jidanni.org>]

'((font . "-*-fixed-medium-r-normal-*-16-*-*-*-*-*-fontset-standard"))
looks great but now I am older and want bigger fonts. One cannot just
s/16/18/ it turns out, perish the thought of just hitting control-plus
like in some browsers.

I somehow determined what looked great was
 -sony-fixed-medium-r-normal--16-150-75-75-c-80-iso8859-1

Using '((font . "-*-fixed-medium-r-normal-*-18-*-*-*-m-*-*-*"))
indeed gives a yes bigger font, but it sure doesn't look as nice.

Any 18 to 20 sized recommendations?  (I think at size 24, 80 characters
will start to wrap.)