mbrown3
Inspired
My Take.
From your initial "needs" Id honestly say the Kemper would suit better. You dont need many FX, or complex routing which is a major plus for the AFX. You only need a few tones - and more critically have the amps you want to capture. That along with easy minor tweeking with the real knobs of the Kemper would seem to suit you better.
Id also agree with Cliff (no surprise) that the Kemper did feel better a short while back. It seemed a little more lively. FW 17 got close IMO - but FW18 nails that - particularly with clean/low gain tones that did seem a little lacking in bite compared to the Kemper (and my real Machete). FW 18 seems to get much closer there. Whether the AFX is now better "feeling" than the Kemper or on par - quite honestly thats going to be a personal opinion at this point in time. I tend to go with Cliff though - yes hes biased, even the most balanced of us would be - however his drive to make his box the best it can be means he isolates aspects he thinks are week and improves them as/when he can - which means he is perfectly capable of acknowledging where the AFX falls down (next to real amps AND other modelers). So, if Cliff says the AFX now feels better to him than the Kempers he owns, Id believe that.
Thank you very much...both for your honesty re: the Kemper, and the info on v. 18. I keep reading that 18 does nail the feel a lot more, and that's great news. Also one of the big draws of Axe-FX, IMO, is the constant updating. The pursuit of perfection and constantly addressing weaknesses is something I relate to well, and it seems like updates for the Axe-FX happen a lot more often than on the Kemper.