Top ranked or cheaper college ..?

As an international student, he is unfortunately unable to visit the colleges and see things first-hand. Of course, he would like to go to Purdue or Texas AM, but he is also very understanding about costs since I will be financing his education in the US. All the schools that he has been admitted (listed above plus a few more) were selected on the basis that they all have strong engineering programs, though their rankings may vary. So ultimately, he will let me decide where he will actually go.