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You haven't mentioned how your going to be using it? Recording at home? Studio? Live? Using a cab, FRFR?
That's why I'm hesitant to give any advice except to say try before you buy. because the Kemper is not really intended to be a replacement to tube amps, quite the contrary , the best scenario is using it with one's tube amps by making your own profiles. I still have my POD HD 500 and even though the drives and effects might not work well with the Kemper, but they work very well real tube amps. So for capturing profiles of real tube amps that you own, the Line 6 effects vastly expand the possibilities.