I'm sat in T Block in the South and have been ever since we were moved from the mirror seat in E block when the new stand opened. I'm happy enough with it.
Currently in Block K, which is has a good view and has a decent atmosphere because it is usually pretty full. Also sometimes have some lively souls on the hospitality balcony. I have to say that the south has a much better concourse
The back of U block in the South, works well as we have a wide range of friends and family who not all would like being amongst it on the Kop but want a little more atmosphere than the West.