>It's finally happened to me. I've got a supervisor who wants to rewrite every bit of code we have and migrate to a single environment Dataserver solution.
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>I've told him that I don't think that's our best choice and that a mixed environment would probably suit us better. (My instincts are screaming that an enterprise wide migration would cause more headaches than could be justified)

I would agree with you, a mixed environment is the most sensible, don't fall for the allure of the "one-size fits all," particulally if you already have working apps of a mixed nature. There was a push here a few years ago to move every type of application & data to PB/Sybase, when it was heavily marketed and hot stuff. Well, it made little sense for some apps, cost a heap of money just for new licenses (never mind all the conversion work), and resulted in a period of chaos and low morale, a shortage of qualified developers to do the work, projects way behind schedule or even abandoned after a large financial loss...

Finally things have settled down, and we're back to more-or-less choosing the tools to fit the job, and sometimes just the supply of available developer expertise in certain tools. We have Excel & MS Access for simple end-user apps ("go build it yourself, we're too busy!"), we have vfp for local LAN, low-security usage, we have Sybase & MS SQL Server backends for high-security and WAN apps...