CSE - even starting salary can be as high as 44 lakhs per annum or low as 5.5 lakhs per annum, but after btech in CSE there is no need to have any further degree i mean to say any further studies.
ECE - core companies are very less in number very less even after btech in ece there is more probability that you will go in coding sector means CSE.
So go for CSE if you want to have only one degree and earn high.
If you have interest in mobiles etc then go for ECE but in ECE there are very less chances of going in core.
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