Downsampling the Igage screen shot at 48% to match the
competitor's image size:
Igage (48%) >

Competitor

Click [ Igage Raw ] or [
Competitor Raw ] for the full
sized images.
Other competitor's:
maptech.com's Mapserver
This link [
maptech mapserver ] should display this same area with Maptech
basemaps. Note that the Maptech server has the 1952 edition of the 'Clay
Basin' quadrangle, not the latest version. [
see updated maps for more
information ]
Igage All Topo Maps at 100%
All Topo Maps at full size (100%)
notice how clean the contour
lines and text appear:

Competitor zoomed in to (nearly) match
(200%) Notice the
compression artifacts

The competitor's product can only be zoomed to a few discreet zoom levels
so we can't match the full size All Topo image exactly.
All Topo Maps are usable when greatly magnified since they are compressed
with loss-less compression. The competitor's lossy compressed maps are nearly
worthless when zoomed in. Here are actual screen shots of zoomed in coverage
from the two programs:
Igage at 180% (actual screen shot)

Competitor at 400% (actual screen shot)

All Topo Maps are clearly superior! (pun intended...)