Reccomended End Game Software?

I am interested in getting some End Game Training software.

Which programs do others here reccomend?

1)Endgames part 1 -4 by Karsten Mueller.......Chessbase Training CD
2)Mate Studies......Convekta
3) ABC of endgames ....Chessbase
4) Total Chess Training 2.Convekta , which includes Chess Endgame Training.

Theory and Practice of Endgames (?) by Convekta is nuce. A bit like the excellent CT-Art 3.0