Hello student. We cannot say that any institute is best and can guarantee 100 percent seat or best Mark's in any entrance exam.

Institutes like aakash,  guru govind public school etc can help you boost up your preparation.

You need to put in 100 percent efforts from your side. Insititues help in clearing your doubts, explaining you the more ways to solve problems, fetching you the knowledge of different sides of solving a problem etc.

In answer to your question, it is a good one for neet preperation