Thanks for your reply.
Sas aviation is brilliant when it comes to anything except nav+ir+radios. Mr S.P Singh(who handles the nav, ir and radios) though very learned person, according to me is not able to justify his statments right. I maybe wrong but atleast i am not comfortable with him. But rest everything is top notch at SAS. I have almost decided to go with SAS, but just because of nav,ir and radios i had to draft a message here to get some advice.
Thank you.