Hello, I'm contemplating the purchase of an ETX80 or ETX90 and am undecided on which to purchase. I intend to use it for both visual observing and casual imaging (afocal attached to lens, probably with either an Olympus SP565 or Canon SD1100...the former is fairly heavy at 10 ounces, the latter very compact and light). I understand the limitations of both scopes in regards to aperture, chromatic aberration (ETX80), etc. I currently have an old Tasco 4.25" and even it seems too much to lug about, hence my desire for compact. Price is also an important factor. My basic questions are this: will both these scopes handle the weight of the cameras (perhaps I will add some weight at the top of the tube to balance) and most importantly...which will provide the brigther image for my camera..the 80 with its lower F ratio or the 90 with its greater aperture and better optics? Craig