I think Nissan Sunny is far better than Charade if ur getting it for family use. I kept 1983 Nissan Sunny in great condition with power steering and ac and it was great. Sold it a few years ago. In the mentioned budget plus minus 20k its the best choice for family use as per my choice.
On the other hand if u want to go for some modifications and use it for racing etc then you go for charade.
Hope this helps.