well ill give you some heads up about the SW/GSO, GSO is not better in build qualitys not by a fair shot i know this due to a friend of mine having one and seeing them side by side, the difference lays in the tube construction and collmination system. as for the mirrors. they are pretty much on par with each other, but with the substrate bing substantially different. one is made with normal glass, the other with pyrex glass. minimizing the mirror changing shape due to temperature.
With either of the telescopes. instantly go and purchase a high quality focuser. do not buy the GSO/Bintel 10:1 they are Cr4p! and will not hold a canon 40d at 800grams.! look at a minimum of Moonlight,JMI or Feathertouch.
out of the box, the SW focuser is alright and will hold your camera but itsn't the best by a long shot after SW decided to make the 2" interface a seperate piece! grrr...
