Keswick teaching has a different understanding of faith (more a volition than a cognition). Further, they do not believe the sinful nature is eradicated. Rather, they believe it is counteracted, it is overruled by the Holy Spirit. Thus, the continual stress on surrender. Nevertheless, though there is some bad formulation in Keswick teaching, there are some good teachers that are worth hearing. I would strongly recommend H.C.G. Moule. He is Reformed in many ways but was a Keswick writer, speaker, etc. His commentary on Romans is a masterpiece and his short book 'Thoughts on Union With Christ' will edify you and help you to be more like Him. In some ways, the Puritan Walter Marshall (and even to a certain extent, Owen, in 'Mortification of Sin' and 'Communion with God') anticipate Moule. One more thing: in terms of difference in preaching, I used to listed to a Keswick influenced preacher. He would often make 'Christ as sanctifier' the gospel (as opposed to Christ as redeemer). Christ in us is good news, but Christ for us is THE good news. That is a confusion that 'holiness' type teaching runs the risk of mucking up.