If your goal is Physical Therapy I think the CES would be a great way to go. I've been an NSCA-CPT for almost 10 years and am now taking the CES course. The content is outstanding.
I work as a therapist in an outpatient clinic and I would also recommend the new CSPS certification. Almost every single patient I see has some co-morbid condition along with an orthopedic issue. It is crucial to know how your exercise interventions will impact the patient in all situations.