How to choose between ORMs?

[Roy Smith]

In article <mailman.35.1364969706.3114.python-list at python.org>,
 Alec Taylor <alec.taylor6 at gmail.com> wrote:

> SQLalchemy and Storm are a few of the popular ORMs out there.
> 
> Personally I have been using web2py's DAL.
> 
> Other than form generator availability, 'print as raw SQL', multiple
> primary keys, widgets*, `check` conditions and compatibility with
> OracleDB, Postgres, SQLite and some of the NoSQL systems; what else
> should I be looking for?

Depending on what you're doing, schema discovery (aka introspection, 
reflection, etc) may or may not be important to you.

And it should come with a nice shrubbery.