> >...but as stated above the 0.145u1 code already produces > > perfectly stable CHDs when the process completes fine. > > > Or not... http://mametesters.org/view.php?id=4699
My choice would be to wait for an official release before converting all. Not because u1 may be untrusted, but because apparently and according to certain blog, the release was rushed and there's a possibility compression ratio may improve. Plus some bug fixes during the reimplementation code are still needed. This is a chance for testing as many as you can though.