As I said earlier: this is no subject for this forum. I've seen a couple of op-amp types listed in the replies, but no one indicates why the one should be better than the other, based upon technical spec comparison.

Instrumentation amps and op-amps come in a wide variety of flavours. The best type to choose for a particular application depends upon a lot of parameters, which we haven't heard from mr. Reddy. So either we go on listing all the types we can think of, or end this pretty useless discussion here.