Before answering let us understand about the institutes
AIIMS:
No. of colleges: 15
No. of seats: 1207
No.of students applied: 4,52,931
Competition: 1:375
Eams Pattern: 200 questions Duration: 3 hrs 30 mins
One mark for the correct answer, -0.33 for wrong answer and 0 for unanswered
Fees: Rs.5856.00 including hostel fees (will vary for different AIIMS colleges)
NEET:
No. of colleges: 192
No. of seats:
Govt colleges: AQI: 4129 State Quota: 23378
Central Universities: 724
No.of students applied: 13,26,725
Competition: 1:45
Eams Pattern:180 questions Duration: 3 hrs
One mark for the correct answer, -0.25 for wrong answer and 0 for unanswered
Fees: MBBS Course Fees
COMED-K:
No. of colleges: 19
No. of seats: 700
No.of students applied: 35000
Competition: 1:50
Eams Pattern: 180 questions Duration: 3 hrs
One mark for the correct answer and no negative marks.
Fees: Rs. around 5,00,000 (May vary every year)
AIIMS exam is conducted for only one institute and has a high reputation. However, the recent addition has a lot to prove. Top 3 AIIMS are world class. The recent included AIIMS has to prove in terms of infrastructure, faculty and patient load.
NEET: This is conducted for All India and one has to get around 90 percentile to get into government colleges. Even to get admission into private colleges under management quota, one has to qualify in NEET.
COMED K: This exam is conducted for Karnataka State for admissions into 19 private medical colleges.
Now, coming to your question, which one is better among the three?
First AIIMS, Second NEET and third COMED K.
Again it depends on which AIIMS, you are getting the seat.
Top government colleges are better than the last 5 AIIMs institutes.
If you can afford, the top private colleges under COMED K is better than the last rung government medical colleges.
So, work hard and try to top and who have the options wide open. If your rank is bad, you got to take whatever is left out.
Stay focussed and do well in the exams.
All the best,