Rear derailleur Atlus vs Tourney

Hay there,
Me and my girlfriend are currently on tour through south east Asia on a couple of old Saracen mountain bike we’ve converted into touring bikes.
Unfortunately I think the rear derailleur cage is bent on my girlfriends one and I’m looking to replace it.
It is a 7 speed cassette with a triple chain ring at the front. Which would be better for the job? Atlus or Tourney? And what actually is the difference?
Thanks so much for any help as we’re far from home and don’t speak much Thai!!
Cheers
Me and my girlfriend are currently on tour through south east Asia on a couple of old Saracen mountain bike we’ve converted into touring bikes.
Unfortunately I think the rear derailleur cage is bent on my girlfriends one and I’m looking to replace it.
It is a 7 speed cassette with a triple chain ring at the front. Which would be better for the job? Atlus or Tourney? And what actually is the difference?
Thanks so much for any help as we’re far from home and don’t speak much Thai!!
Cheers
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