Hi,
It totally depends upon you which stream you like and you have interest in . Do not go for placements and other things , if you have ability and knowledge you definately will get a good placement from any stream.
If you are good in coding , algorithms , programming then you can pursue btech in computer science but if you dont like it and want something like that of  gadgets and all then go for ece .
So the ultimate choice is of yours and choose wisely.
Hope it helps....