Mathew Lane — prestigious and widely (get the pun!) acclaimed developers of mid-side stereo enhancer DrMS — follow-up plug-in called StereoDelta is on promo at only $39 (list $69).
StereoDelta is an easy to use spatial processor, available as AAX/AU/VST/VST3 plug-in, with one powerful knob to control your stereo image. From true mono to three dimensional width, StereoDelta always maintains a natural sound thanks to DrMS technology inside.