Both SGPI Lucknow and PGI Chandigarh are esteemed medical institutes of the country. Here are some of the facts I thought were worth mentioning.

• The institute that offers students practical work to develop enhanced skills should be the one to opt for. 
• Such an institute is Chandigarh PGIMER. 
• It is reckoned as one the best institutes after Delhi AIMS for postgraduate and Ph.D. Programs.
• PGI Chandigarh is an autonomous institute and is under the central government whereas SGPI is an autonomous is an institute under the legislature act (UP Government)
• Although both the institutes are in the same league with AIIMS Delhi, every institute has its own benefits. 
• PGI Chandigarh provides the best facilities to its students in the PG courses such as the clinical seats. 
• Such a facility is not offered to the students in SGPI but is an exception when it comes to super specialty.

You should also consider the distance of these institutes from your residence. As it is one of the important things while choosing a college. Decide which one meets all your requirements and then opt accordingly.