I made the switch to Proteus & DipTrace several years ago & have never looked back.
funnily DipTrace was my first favourite eda, i made few hobby projects with it, but some limitation made me searched for better option, i tried proteus iirc, eagle, kicad, circuit maker etc and altium. Altium is much much better option than anything else. its few decades ahead, or to be more precise, altium is current, the rest low end eda are few decades behind, including Diptrace which is not far off from Kicad and Eagle (kicad is advancing like cern warp space now so watch out paid diptrace folks).
features not avail in diptrace to name a few... alternate schematics view, alternate footprints, filled polygon schematics, interactive routing, linked datasheet and supplier list etc, not to mention integrated UI for all footprint, component library, schematics and pcb. those features, it seems will be realized only in few decades to come in DipTrace since from time to time i tried downloading DipTrace update. to my dismay, nothing much changed. the worst part, my earlier project cant be opened with latest version, it proved the developers are not very experienced in professional application development. now i used Altium, turning back to Diptrace is a big NO.
otoh Altium is not without weaknesses, mostly i can get around, one thing that i dont expect happening in today's world is its poor drawing performance in schematic (2D) editor, this is not supposed to happen so i dont know what happened with those Altium champions.