Houghy,
Its worth noting that UO Konigs and the MK-70's do a very good job in a scope like your F10 SCT, not far behind the premium stuff, so in your case they are "good value for money". (you probably knew that already I figure )
. Their inabilty to perform well in faster newtonians and fast refractors, is what brings em back to the "middle of the field" in my ratings. Rated in a slower scope like your F10 SCT only, they probably get a 7.5 to 8/10, same as the Widescan III IMO. In my F5 newt they scope about 4.5/10.
CS-John B