I own two Skywatcher Dobsonians, the 12"" collapsible and the 6"" traditional. The 6"" is ideal for those nights when your body just doesn't want to pick up something heavy, or if you know you're short on time or are going to have to move often (like to dodge a tree). It's still tall enough to work out well when used with a short stool or drum throne for a chair, making long observing sessions easily possible. Any smaller (like the 4.5"" Orion which I also have), and you'll be looking for a table to put it on so as to not be so bent over.6"" of aperture has enough light grasp for bright deep sky objects. 1200mm focal length helps make enough magnification for decent planetary detail. For a long time, the 6"" f8 Newtonian was the gold standard of amateur telescopes. More recently, that has shifted toward 8"" f6 and 10"" f5 or larger, but still, this is a serious telescope and not a toy in any way. If this were all I had, I'd probably want more, but for a second scope it's perfect. The 12"" has 4x the light grasp and is an absolute stunner. It also weights a hundred pounds, so there's that. The 6"" is nowhere near as hard to move.Speaking of magnification, an 8mm eyepiece yields 150 x magnification, and is about the max for an average night of planetary viewing for me. Considering this is my quick grab telescope, I bring an 8-24mm Celestron zoom eyepiece and a 6mm Orion Stratus 68 eyepiece. Occasionally the 6mm will work for me, but the zoom will always work for me, usually right around the 10mm setting. All depends on atmospheric conditions as any experienced stargazer knows.The straight through finder is easy to use especially for bright stars and planets. Keep both eyes open and move the scope until your target is in the cross hairs. I could see it being harder to use for picking up a fainter deep sky object, but I use my larger scope for that. Upgrading to a red dot/telrad could help with locating deep sky objects.Only Skywatcher offers the tension knobs on the sides like this has. My 6"" Dobsonian happened to ship before Skywatcher was officially brought to the 'States as a brand (and is labeled as a Celestron Starhopper). It's clearly the same thing as this listing, the only difference is a black main tube and a 1.25"" focuser. If you buy from Amazon, you'll get the upgraded 2"" focuser, which will provide better wide field views with a 2"" low power eyepiece. I don't use mine for that, so it's a non issue for me.