...and I would in most cases agree.
It is just that with KW that, when he upgrades his gear or create new products that supersedes his older gear, he almost always states his famous "slight improve" and tries to describe what and how was slightly improved. It was so when I've asked him about RE-1 vs. RE-7 differences, which I find not so slight in RE-7's favour.
Therefore, having my "slight improve" experiences, when he claimed DSP-1 V4 and later V5 was "significant improvement" over older versions I instantly knew believed that DSP firmware upgrade was a must have.
Do I have to add that he was right?