I don't know how are the last ones, but they have been crap for years. I think that when we mention sta-prest type trousers on this forum we refer either to original vintage ones or to decent imitations. (Well that's my case anyway.) If you go back on the thread, you'll find this subject have been discussed at length.
Agree.... the best imitation I've found is made by Levis was part of their golfing range in the US. Right cut, right feel and colours.