Douglas, I've been enjoying my Ohm F speakers for one year now. Mine are rebuilt using 3000 series drivers. I reached the decision to buy following an informative and unhurried phone conversation with the owner of Ohm Acoustics, John Strohbeen. You probably should reach out to him (he answers the corporate phone...) so you're aware of the options, as he sees them. Good guy. Good luck, (and keep Ohms in your listening room!)