Choosing a particular college or a department actually depends on you, and how you want to shape your career ahead. Having known some people who study in both these institutions, I can say that they all have their fair share of strengths and weaknesses. 

I might not be able to help you select one among them, because they are both good in their own ways. So, I will share some information about them which might help you make the choice.

• ECE at IET Lucknow has one of the finest faculty. They also have a great student crowd.
• HBTU also has highly experienced faculty members.
• Placements at HBTU are also much better than IET Lucknow.
• The enrolled candidates of the GATE exam are really great.
• They also offer a vast alumni network unlike IET.

It is suggested that you go for the more experienced institute, as it will prove to be better for your career ahead. You will get to learn new skills and take part in seminars and industry visits, to get a slice of the corporate world.