Comparing Three 4 Inch Telescopes, Testing On Jupiter

In making this video I have used these optical instruments:

Skywatcher Startravel 102m f/5 achromatic refractor telescope.
Skywatcher Heritage 100P f/4 reflecting telescope.
Meade ETX105 f/14 Maksutov telescope.
Skywatcher 25mm Super MA eyepiece.
BST Starguider ED 18mm and 8mm eyepieces.
Vixen SLV 6mm eyepiece.
Skywatcher Nirvana 4mm 82 degrees eyepiece.
SkyTee-2 Alt Azimuth mount.
Skywatcher EQ5 tripod and extension culumn.
Altair Sabre Alt Azimuth mount.
Meade LXD55 tripod for Sabre mount.
Huawei P30 Pro mobile phone camera.