Two excellent options. Congrats.
Be sure you understand the affordability of each school (particularly the fifth year for Lehigh). After that it is personal preference. Two reasonable people could make two different choices. Some things to consider:
–Do you want to be in a city or not?
–Do you want a co-op program?
–Do you like the combined IBE program?
There are enough differences between the two schools that one should stand out as being the better fit for you.