Last Saturday I passed my L&E using only TDC. I found it to be clear and helpful. In all TDC has you take five 90 minute tests. At test time the questions were very similar in style and intensity to TDC's test questions and I was very comfortable taking the 90 minute test. TDC's mocks get increasingly harder. The rationales are where the real learning happens! The materials were a good mix of test info and test strategy and at the end of the day I feel better prepared as a clinician. I highly recommend TDC. Good luck studying!