So basically, the phone I'm using is running pretty low on storage space, and when it is changed, and SP doesn't save progress during device transfers, I want as much of my most recent planes to be online, so I can redownload them

Differences:
2×PL-10 missiles (Custom model btw)
Overall enhanced maneuverability (probably)
And some other stuff I think

Next build is either gonna be the Krusty Krab, or Panavia Tornado

Mandatory 1st part of Wikipedia page
The Chengdu J-20 (Pinyin: Jian-Èrlíng), also known as Mighty Dragon (Pinyin: Weilóng, NATO reporting name: Fagin), is a twin-engine all-weather stealth fighter developed by China's Chengdu Aircraft Corporation for the People's Liberation Army Air Force (PLAAF). The J-20 is designed as an air superiority fighter with precision strike capability. The aircraft has three notable variants: the initial production model, the revised airframe variant with new engines and thrust-vectoring control, and the aircraft-teaming capable twin-seat variant.