Is NetBSD domain0 ready for production server?

[Martti Kuparinen <martti.kuparinen%iki.fi@localhost>]

I'm getting two new Dell PowerEdges with 4 GB of RAM. My plan is
to be able to run several (non-CPU intensive) virtual machines
on these servers. My question is: is NetBSD domain0 (3.99.x) stable
enough for production servers or should I use Linux instead?
I'd appreciate your unbiased answer (this is not an attempt to
start a NetBSD vs Linux war).

At least one problem I found is that I'm unable to use files
in the local filesystem with vnconfig (port-xen/29775). This
feature seems to work fine with Linux domain0 though.

Martti