opinion on chessbase software

Whats your opinion on those 4 or 5 hour tutorials that chessbase sells for about 35 bucks each? Never seen one though I've seen there samples? Endgame training, opening theory, ect.

Nimzovich I'm specifically interested in Mullers endgame dvd's My score at chessbase is probably slightly below average with a better opening repetoire than endgame. Can you view these in other order and still get most out of them IE dvd3 then dvd4 ect. Is there enough material to value the cost of these dvd's they are on the high side compared to a book?

thanks echecs06 you always wonder if something you havve never used would be the one thing that would make you a signifcantly better chess player.