Is there a pedal like the MXR Carbon Copy Deluxe, but full stereo (inputs too) and expression control over regen (to nosedive in and out of oscillation). I know there's the rubberneck with the instant oscillation footswitch. There's the Wampler Metaverse which is stereo in/out and can control feedback/regen via expression but apparently it doesn't actually stereo pan the repeats and apparently in spite of being all digital does not support firmware updates. There's the EHX Grand Canyon which doesn't do stereo in. Recommendations?