So small is good for somethings. When small is good, one can mistakenly
get
tangled with Aperture fever and wish an 80mm were a 90mm when in fact an
80
will also do things that a 90mm will not do. 25% increase in light
gathering
and 12% increase in resolution is not such a big deal, certainly no one is
trading in 8 inch DOBs for 9 inchers....


No, a C 9.25 carbon fiber OTA!

I think a 25% increase in LGP and 12% in resolution IS significant. Its the
difference between
a complete split and a figure 8 split on some double stars. Also, the 80mm
OTA is the same
OTA as a 90mm. They just don't bother putting in the 90.