University of California (Davis), University of Texas (Austin), Case Western are some of the best colleges in Biomedical engineering. But again you have to choose university based on what specialty you want to persue later on, could be medical instrumentation/medical imaging, Biomaterial, Neurology/Bio-signal, Bio-transport, Biotech/Pharma, Medical device R&D and so on. One university may have best program on one of these specialties whereas other might have better program on another. So its all about what you want to persue in grad studies and then researching which university has best program/financial aid/scholarship/research opportunities/R&D related to that field. UT Austin has best program in Biomaterial whereas UC Davis in Bio-signal/Neulology. So figure out what is best for you first.