A lot of the "Insight" teachers (especially the American ones) teach essentially the style of Sayadaw Mahasi, U Pandita, etc, from Burma. That's what I practise, so I find them useful.
The non-monastic teachers that I listen to a lot are:
Joseph Goldstein: I find recent Goldstein to be fairly standard Theravada. He learned a lot from U Pandita since the early 80s and that's mostly what he communicates (very well), but with some interesting quotes from other traditions.
Steve Armstrong: He was a monk with U Pandita in Burma, and his talks are very much oriented to that meditation style.
Gil Fronsdal: Was also a monk in Burma. I find his talks useful in the way they relate to living a lay life. He's got a much "lighter" approach than the others I mention.
I've recently started listening to Jack Kornfield. He was one of the first western monks with Ajahn Chah, but returned to lay life in the early 70s. I didn't resonate with his earlier stuff on psychology, etc, but his recent talks at http://www.dharmaseed.org/teachers/
I have found very helpful. He draws a lot on the Bodhisattva idea, but I think argues it well as a skilful approach to lay life, rather than as a particularly Mahayana approach.
I also like Patrick Kearney (another former monk in Burma). But there is not a lot of his stuff on the Net, and he took the nice series of retreat talks off his web site...
Personally, I prefer to take my primary guidance from monastics. However, I also find it really useful to get perspectives on applying the principles to lay life.