Speaking as someone who was a teenage listener in the prime of both bands, Bangles > Go-Gos.
To me, the Bangles were much more of a complete and versatile BAND, with their greater collective talent producing more substantial music than one might expect from a "girl group".
Whereas the Go-Gos were basically Belinda's bubblegum backing band, and as someone pointed out already, Belinda was much more successful on her own than with them, which speaks volumes.
YMMV.
To me, the Bangles were much more of a complete and versatile BAND, with their greater collective talent producing more substantial music than one might expect from a "girl group".
Whereas the Go-Gos were basically Belinda's bubblegum backing band, and as someone pointed out already, Belinda was much more successful on her own than with them, which speaks volumes.
YMMV.