Ultra Wide Binocular: Svbony 2.1x42 vs Orion 2x54 and homemade Nikon 2x54

SVBONY SV407 Very well made, very beautiful, small enough to fit in my coat pocket. I compared sv407 with my friend's Vixen 2.1x42 and was surprised that sv407 has better edge sharpness than Vixen 2.1x42 while the price is only 90usd (in Vietnam) vs 250usd of Vixen. 2.1x42, FOV 26 degrees. I can see all the major stars of the Big Dipper or Orion constellation through SV407 binoculars. Very useful binoculars to see Milkyway with a suitable price But ORION 2x54 is the best choice if you can pay 150USD The Orion 2x54 has the same optical quality and FOV as my homemade Nikon 2x54. With a 36-degree FOV and nearly full-field sharpness, I think the Orion 2x54 is the best binocular for constellation viewing purpose.