Most any great unit you´ll find will probably suck tone just as much as the G-Force, but for a different reason; they are all made for studio aux use where preserving the dry tone isn´t a thing. From a live guitar perspective this also means they´ll all have long preset changes with drop-outs. So getting a mixer is more or less a must.
But anyhoo, if price isn´t a concern I´d recommend any modular Eventide (4000, 4500, 7000, 7500, Orville, 7600, 8000) and after that I´d go to the Kurzweil KSP8, Lexicon PCM80, Eventide Eclipse, Ensoniq DP/Pro and Korg DL8000R. All of them have capabilities and sound way, way beyond that basic four-tap in the TC.