After fiddling for quite a while for a good and easy to use persistence framework, I've come across this one : SimpleOrm. It is really easy to use (even if it is still a bit in infancy).
It is much easier than JRF, Hibernate (overengineered), CMP on EJB 2 (not quite there) and others.
Of course, it is for Java only but that's our current technical choice (works well, bugs can be traced down easily, it can be deployed on W2K, Linux and SunOS).
