According to the US newspaper, the one of the highly appreciated Russian aircraft is the MiG-1.44. The MiG 1.44 aircraft is believed to have many technologies to minimize radio signals, making the aircraft invisible to enemy radars.
Specifically, the Russian Air Force has chosen the T-50 (Su-57) fighter for its only 5th generation stealth fighter program in the competition with Mikoyan’s MiG-1.44 fighter. In 2000, the MiG 1.44 was tested twice, and the project was later shelved without any clear reasons. According to some Russian military sources, the main reason why the MiG-1.44 program was frozen was that Moscow had its choice of fifth-generation stealth fighter.