Don't take *just* my word for it
I haven't benchmarked them for anything. I'm just basing it on the fact that RDBMSs have been around for quite a while (in computing industry terms) and tuning them is still a black art. The concept of OODBMS has been around a relatively short time. I don't think anyone has had the time to really figure out a different way to build a DB yet. Especially considering it's mostly RDBMS vendors coming out with a new engine with an object syntax.
===
Purveyor of Doc Hope's [link|http://DocHope.com|fresh-baked dog biscuits and pet treats].
[link|http://DocHope.com|http://DocHope.com]