Asliarun, you have stated that North Indian classical music is more melodic than Carnatic or South Indian classical music and at the same time Carnatic is more technical than North Indian.
Thad, you have stated OTOH that Carnatic classical music is more melodic than North Indian classical music.
It is very much possible that you guys have much better understanding and appreciation of the two forms of Indian classical music. However, my view is that these statements do not carry much meaning for me. My understanding is that the basic goal and the methods to reach that goal are very much the same. They differ only in their forms of presentation.
I have enjoyed both forms immensely. I have also seen from quite close quarters that the greatest of musicians of both forms genuinely appreciate, enjoy and learn from the other form.
Presentation forms differ quite appreciably even within each of these two styles. Mallikarjun Mansur's vocal presentations have a very different form than, for example Amir Khan's. Similarly, K V Narayanswamy's is very different from Maharajpuram Santhanam's, as theirs is very different from Bal Murali Krishna's.
Some musicians in the North Indian style even consciously modeled parts of their presentations after some of the Carnatic elements, for example, Abdul Karim Khan, Bade Ghulam Ali Khan and also Ravi Shankar. Some of the Carnatic performers have also done very similarly.
Both forms have the same ragas (mostly they are known by different names in the two styles) and the same tala (rhythm) system.
I agree with Thad that most serious Western listeners enjoy the more serious parts of Indian Classical music, which is the alaap (raga exposition).
If you can ever get hold of Ken Zuckerman's Sarod recordings, please do listen. He lives in Basel, Switzerland and has a few CDs. I have never heard any Westerner play any better, although I know many many of them who practise either form of Indian classical music.
Before I end, let me tell you that Bala (member thevortex of this forum) started a detailed e-mail interview with me on many many aspects of Indian classical music, including similarities and differences of these two forms of Indian Classical music. I do not see him very active these days in this forum, but I have still some contact with him, although a bit sporadically these days. Our discussions ran into many many pages. He was very intent on publishing those discussions in a forum. However, I was very sceptic because I thought who would have any interest in reading. However, it had very detailed discussion on related topics. In any case, these are best illustrated with live demonstrations rather than just discussions.
I hope, both Thad and Asliarun, you guys do not mind me expressing the difference of my views with yours.
Regards.