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&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.