If you want rack, and power, I'd go with the Axe-FX III MkII. That's what I'd buy, even over Eventide....unless they released a new Eclipse maybe.
If you're just using this for effects, the Axe-FX III MkII will be able to run very complex effects chains vs nearly every other modeler. IMO.
There are cheaper options, like Helix, but that's a dead end now that the Stadium series is out. Helix has a rack unit; which isn't in the Stadium series so far.
I'm using my tube amps or computer plugins mostly these days. A future next generation Axe-FX IV could change my mind tho' I had and sold my FM9 MkII Turbo because I wasn't using it, and plan to sell my Helix Floor at some point since I'm not using it.