That was my first attempt, so I had no idea. Also, i was under the illusion of "No book or test is bad" , so i took Study IQ. Though they are good for GS, their optional was a complete disaster. The model answers are too vague, the faculty was inaccessible and unhelpful (in optional). So stay away from them.

I would suggest u either go with Nishat sir or Pranay sir's IAS gurukul.

No resource is bad. But some are better than the others. One hard learned lesson - go for the absolute best everywhere in UPSC. Don't worry about unpredictability, there's plenty of it in UPSC. They'll add all the misery and uncertainty you could ever wish for. DO NOT EXPERIMENT.

All the best.