Squizmek wrote:
I have heard maya's ncloth is the best, followed by syflex. xsi-cloth is not so good, don't use it

Syflex in Softimage is an order of magnitude faster and more accurate than ncloth in Maya. The problem with Syflex is the lack of detailed documentation. I got started with Syflex in XSI with the help of the Digital Tutors Syflex for Maya kit. If you can bear to watch tutorials featuring the ugly, clunky and outdated Maya interface, your investment will pay dividends. The course covers all uses of Syflex, which behaves similarly in both packages. Believe me, Syflex has an incredibly powerful engine under the hood in SI. Have you tried the volume feature? Try wrapping a cushion object in a slightly larger Syflex object, then reduce it's volume to conform to the smaller cushion object - you will attain physically correct folds and wrinkles in very little time. The mantra to bear in mind when using Syflex is that scale is everything!
Use the Java calculator as a starting point which should reside here:
file:///C:/Softimage/XSI_7.0/Doc/Syflex/syflex_units.html