About ALLEN's score test series...

The score test series is absurdly difficult. It's basically advanced level problems in mains format. I studied really hard for the past 3 tests but still failed to achieve a decent score. For the last 3 days i was busy with my school work (practical file, project etc). Now that I'm finally free I am considering MathonGo's test series as it is mains oriented and not too difficult. Please share your advice, whether I should get mathongo's test series or stick with Allen.