I had owned a few scope in the past few years because "hand itch" and searching for the best low cost scope that can fulfill my visual and astrophotography need.
Below are the ranking I give on the different scope I had owned. Please note that the below ranking are base on my opinion (and memory



Scopes
1) Sky-Watcher 6" F5 Newtonian
2) Sky-Watcher 127 F12 MCT
3) Celestron C5 F10 SCT
4) Sky-Watcher 120 F8.3 Achromatic Refractor
5) Vixen A80SSWT 80mm F5 Achromatic Refractor
6) Celestron 80mm F5 Achromatic Refractor
Planetary & Lunar Observation Ranking (1 is best)
1) Sky-Watcher 6" F5 Newtonian
2) Sky-Watcher 127 F12 MCT
3) Sky-Watcher 120 F8.3 Achromatic Refractor with Minus Violet Filter
4) Celestron C5 F10 SCT
5) Sky-Watcher 120 F8.3 Achromatic Refractor without Minus Violet Filter
6) Vixen 80mm F5 Achromatic Refractor
7) Celestron 80mm F5 Achromatic Refractor
DSO Observation Ranking (1 is best)
1) Sky-Watcher 6" F5 Newtonian
2) Sky-Watcher 120 F8.3 Achromatic Refractor
3) Celestron C5 F10 SCT with F6.3 Focal Reducer or 2" eyepieces
4) Celestron C5 F10 SCT / Sky-Watcher 127 F12 MCT
5) Vixen 80mm F5 Achromatic Refractor
6) Celestron 80mm F5 Achromatic Refractor
Wide Field Observation Ranking under Singapore Sky (1 is best)
1) Sky-Watcher 120 F8.3 Achromatic Refractor with 2" eyepieces
2) Sky-Watcher 6" F5 Newtonian
3) Sky-Watcher 120 F8.3 Achromatic Refractor
4) Celestron C5 F10 SCT with F6.3 Focal Reducer or 2" eyepieces
5) Vixen 80mm F5 Achromatic Refractor
6) Celestron 80mm F5 Achromatic Refractor
7) Celestron C5 F10 SCT / Sky-Watcher 127 F12 MCT
Wide Field Observation Ranking under Mersing Sky (1 is best)
1) Vixen 80mm F5 Achromatic Refractor
2) Celestron 80mm F5 Achromatic Refractor
3) Sky-Watcher 120 F8.3 Achromatic Refractor with 2" eyepieces
4) Sky-Watcher 6" F5 Newtonian
5) Sky-Watcher 120 F8.3 Achromatic Refractor
6) Celestron C5 F10 SCT with F6.3 Focal Reducer or 2" eyepieces
7) Celestron C5 F10 SCT / Sky-Watcher 127 F12 MCT
Planetary Astrophotography Ranking (1 is best)
1) Sky-Watcher 6" F5 Newtonian
2) Sky-Watcher 127 F12 MCT
3) Celestron C5 F10 SCT
4) Sky-Watcher 120 F8.3 Achromatic Refractor
5) Vixen 80mm F5 Achromatic Refractor
6) Celestron 80mm F5 Achromatic Refractor
DSO Astrophotography Ranking (1 is best)
1) Sky-Watcher 6" F5 Newtonian
2) Sky-Watcher 120 F8.3 Achromatic Refractor
3) Celestron C5 F10 SCT with F6.3 Focal Reducer
4) Vixen 80mm F5 Achromatic Refractor
5) Celestron 80mm F5 Achromatic Refractor
6) Celestron C5 F10 SCT / Sky-Watcher 127 F12 MCT
Wide Field Astrophotography Ranking (1 is best)
1) Vixen 80mm F5 Achromatic Refractor
2) Celestron 80mm F5 Achromatic Refractor
3) Sky-Watcher 6" F5 Newtonian
4) Celestron C5 F10 SCT with F6.3 Focal Reducer
5) Sky-Watcher 120 F8.3 Achromatic Refractor
6) Celestron C5 F10 SCT / Sky-Watcher 127 F12 MCT
Portability Ranking (1 is most portable)
1) Vixen 80mm F5 Achromatic Refractor
2) Celestron 80mm F5 Achromatic Refractor
3) Celestron C5 F10 SCT
4) Sky-Watcher 127 F12 MCT
5) Sky-Watcher 120 F8.3 Achromatic Refractor
6) Sky-Watcher 6" F5 Newtonian
Easy Of Maintenance (1 is easiest)
1) All except the Sky-Watcher 6" F5 Newtonian unless you "bocha"
2) Sky-Watcher 6" F5 Newtonian unless you "bocha"
Easy of Use (1 is easiest)
1) Vixen 80mm F5 Achromatic Refractor / Celestron 80mm F5 Achromatic Refractor / Sky-Watcher 127 F12 MCT
2) Sky-Watcher 120 F8.3 Achromatic Refractor
3) Sky-Watcher 6" F5 Newtonian
4) Celestron C5 F10 SCT
Difficulty of Dewing (1 is most difficult to dew)
1) Sky-Watcher 6" F5 Newtonian
2) Sky-Watcher 120 F8.3 Achromatic Refractor
3) Celestron C5 F10 SCT / Sky-Watcher 127 F12 MCT
4) Vixen 80mm F5 Achromatic Refractor / Celestron 80mm F5 Achromatic Refractor
Cost (just a guide)
1) Celestron 6" F5 Newtonian with EQ3-2 Mount: S$1045 New (Astro Scientific Centre)
2) Sky-Watcher 127 F12 MCT OTA: S$900 New (McGill)
3) Sky-Watcher 127 F12 MCT with EQ3-2 Mount: S$1400 New (McGill)
4) Celestron C5 F10 SCT OTA: S$750 Used
5) Sky-Watcher 120 F8.3 Achromatic Refractor OTA: S$750 New (McGill)
6) Vixen 80mm F5 Achromatic Refractor OTA: S$599 New (McGill)
7) Celestron 80mm F5 Achromatic Refractor OTA: S$200 Used
Have a nice day.