Good but not SUPER strong
Four stars is a good rating in my book. I own a little of the Bachmann EZ track and this track looks better. Its Code 83 and has a better looking roadbed. Also the rails can be lifted off the roadbed easily if the track is damaged.
The sections don't snap together in the strongest way. Its not on par with the Z scale Rokuhan track I own but it will do quite nicely in anything like an adult setting.