Just shows Russians are smarter than they are given credit for. You pay to take my junk and I will build more new better weapons...Thankyou very much.
As for the Toshiba MMM although it is touted as the big deal that in itself wasn't what made the Akula suprisingly quieter than previous soviet subs and pretty much equal to the 688i. The Walker spy ring helped a shed load. Soviets found out how noisy the subs were started a quietening programme. The prop was only one small bit of that. Also Subman, the Akula always had the scythe bladed prop.
You should check this forum out
http://forum.keypublishing.co.uk/showthread.php?t=48279
Many knowledgable people.