dear vikrant
for ipcc subject as per mine and my friends experience i would like to suggest some coaching class.
taxation- rejesh sharma taxation classes( good practical and theortical), u will get also practical knowledge in that class.ajay jain sir and ksp sir are also options.
law- munish bhandari sir is the best in whole laxmi nagar.
audit- surbhi bansal mam is best.
sm-ps rathore and madan sir is best classes.
IT-madan sir, ram mohan jha and vikas kapoor are the options.
cost and fm- for costing i think bhagwan lal,mehta sir is good and for fm ashish kalra is the best.
accounts-praveen sharma sir is best,bhagwan lal sir,praveen jindal sir(for AS specially) are the options.
regards
tarun rustagi