Individual consumer case at SCDRC is better or in the group at NCDRC?

I wanted to know which option is better & why? Filing an individual consumer case at SCDRC Or a group case at NCDRC against a builder. I have read that filing a group case at NCDRC is better because an appeal against the judgement of NCDRC can only be filed at supreme court, so its helps in saving time & money both. However a complaint u/s 12(1)(c) takes a lot longer to be disposed of on account of various procedural requirements. And an order against the builder to give refund + compensation to all buyers of the project may only be a paper decree incapable of realisation. Instead its better to file an individual complaint at SCDRC if the claim value is above 20 lakh rupees. So i need clarity on this issue because if we file a case at SCDRC it will take more time, money & efforts from our side if for any reason the case reach supreme court, even than we don't know whether the judgement will come in our favour as an aggrieved consumer who have put their hard earned life savings on stake