Columbia vs Purdue (Engineering)

I know Columbia is one of the best universities in US, but I haven’t heard from anyone or found anything about its engineering program.
At this point, my HS stats are not even debatable to any of students who applied for Columbia.
However, I found out that I could go to Columbia by the 3-2 engineering program from affiliated Liberal Arts colleges.
I applied to both UIUC and Purdue right now, but I will go to Liberal Arts colleges if Columbia’s engineering is way better than that of these schools.
Please tell me about engineering in Columbia!! Is it worth enough to dump UIUC?

UIUC is a quality school for engineering. I would not spend an extra year to get a degree from another institution.

yeah, it is hard to explain why transfer to Columbia in essay. UIUC is 2nd in undergraduate engineering science and engineering physics.