I go to both places. E&M is certainly stronger in massages. However, Yiren is certainly better for prostate and nude reverse. It really depends on my mood. If i want to get pampered I go to E&M. If I want to feel like my teen days getting it on with a young inexperienced girl I go to Yiren.
Although Michelle at E&M provides a great massage, I have skipped it many times and just had an hour of 'fun' with her.