That would be the Avro Canada
C102 Jetliner which flew only 2 weeks after the Comet did. Sadly the airlines in North Amercia couldn't be bothered to buy them, and when the Korean War was at its height,
CD Howe had the Jetliner program cancelled, saying it took too much away from the CF-100 production line.
Frsin does a solid resin
kit of the Jetliner in 1/144.
The Comet kit itself is quite straightforward, especially if you don't mess around with the windows and use the decals. It's actually a pretty good first or second vacuform kit.
Of course there is the
Frsin injection kit in 1/144 if you like a challenge.