As has already been mentioned, unless you try them all you'll never know for sure what sounds best in YOUR opinion.
That said, having tried the FRFR112 (probably the same box re-branded as the HB), I'm quite happy with the PC112+.
Having used it with IRs in the Helix and in the PC112+, I like having all the options open, and the options which will open up in future upgrades that the standard Powercab WON'T be getting. Like more speaker simulations. If you can afford it, don't cheap out on the standard Powwercab.