The development of xinha is not in a good state, i am not sure, whether there will be a a new release. we have not had problems with "eating content", but use it still in production on several sites. Have you posted a ticket? the latest real ticket there is from june 2015.
For our main sites, all new development happens with ckeditor (supported via formfields in xo*), but i have not worked on a integration with plain openacs. If it is easy for you to switch to TinyMCE, go for it.