Best GDPI course ? Confused between btri** and Prepb**

I am expecting 99-99.2 percentile, and my profile is 9/8/7 GEM. I have 30 months of work-ex till Dec 2025 in IT.

I am expecting only 3 calls - SPJ/MDI/IIFT - so I want to give my best since repeating is not an option at all and I want to convert only the top 15 colleges. On a side note what are the other calls I can expect ? Won't clear LRDI sectional so IIMM is out of the picture.