Which course should I pursue after completing Diploma, BE or B.Tech?

As per the value of a degree, there is no such difference between B.Tech and BE, so you can choose anyone. Private colleges provide B.Tech degree and government colleges provide BE degree. So, you should try for better institutes, like: 1. IITs. 2. IISC. 3. NITs. 4. BITS – Pilani. 5. KIIT, etc.