Many thanks to all for your suggestions.

I actually have FM8.

It is microtunable, but I would still have the problem of trying out different styles with the presets not changing. I would like to go through lots of style changes before I find one I would like, and I don't want to constantly be reloading the VST and preset for every track.

I have been doing some research on the Solton Ketron SD2 that was mentioned earlier, and my understanding from another forum is that it is microtunable. However, I am still exploring how it is implemented, and the manual does not seem to be much help.

Keep the suggestions coming. Both negative and positive, I really appreciate all of the comments.