mate I have nothing against DRDO , what i m saying is that there is general perception among Indians (mainly on PDF) that ISRO is the best govt. organisation in India (b'coz of kudos it brings to India). Yes DRDO has done great work in it's own field & i m proud of that, We need DRDO as much as we need ISRO, but DRDO should get more autonomy & budget as the ISRO gets.
BTW, every missile program of DRDO (not just A-5) has it's roots in ISRO's tech. ISRO developed the tech. for launch vehicle which is obviously dual-use tech. so could be used to develop our missiles of DRDO. IGMDP (integrated guided missile development project) was itself built on the success of ISRO's rocket technology. IGMDP was started in 1980s, headed by Dr. Abdul Kalam who was earlier heading the ISROs SLV-3 program.
What i just want to convey is that ISRO is more professional organisation than DRDO since the former is governed by scientists while latter is more in the hands of politicians than scientists.