Thanks for sharing your experience it's really helpful to know about the recent decline in Volta’s battery quality. I've had a similar situation with a different brand, so I can relate.
For your Honda City 2008, I’d recommend looking into AGS or Exide. AGS GL-50 or Exide NS40Z are commonly used and have a solid reputation for durability and consistent performance. AGS, in particular, seems to offer better cold start reliability, which can be handy depending on your usage and climate.
If you’re open to maintenance-free options, Osaka MF or Phoenix MF are also worth considering they’re a bit more expensive but save you the hassle of regular water top-ups.