As of my last knowledge update in January 2022, I can provide you with a list of some well-known engineering colleges in Uttar Pradesh. Keep in mind that rankings can change over time, and it’s essential to check the latest rankings and reviews. Additionally, preferences can vary based on factors such as location, infrastructure, faculty, and specialization. Here are some reputed B.Tech colleges in Uttar Pradesh:

1. Indian Institute of Technology (IIT), Kanpur
2. Indian Institute of Technology (IIT), Varanasi (BHU)
3. Indian Institute of Information Technology (IIIT), Allahabad
4. Motilal Nehru National Institute of Technology (MNNIT), Allahabad
5. Harcourt Butler Technical University (HBTU), Kanpur
6. Institute of Engineering and Technology (IET), Lucknow
7. Jaypee Institute of Information Technology (JIIT), Noida
8. Zakir Hussain College of Engineering and Technology (ZHCET), Aligarh Muslim University
9. Ajay Kumar Garg Engineering College, Ghaziabad
10. Galgotias College of Engineering and Technology, Greater Noida

Remember to verify the current rankings and gather detailed information about each college before making any decisions. It’s also advisable to consider factors such as campus facilities, faculty strength, placement records, and industry connections.