I think another way to look at this is the amount of budget you have with "tweaking" your setup. I've gone down the rabbit hole deep with Chord products, starting with the Qutest, and deciding I really like the sound signature and decided to throw the kitchen sink at it to get to the top of ladder sound signature I like.Take this opinion for whatever it is worth, as words and my opinion will never replace what you hear. I have owned the Dave since 2018, and it was both my DAC & AMP for quite a while. I used it with the utopia, zmf VC, HD820, and susvara. I took the plunge on the may, after reading all the reviews and talking with some friends about it. Initially it was really hard to decide between the two, but I eventually went with the may. I find the dave to be a bit more harsh and analytical for my tastes, but I did not realize it until I got used to the may sound.
Another way to think about it... The may is cheaper and probably easy to resell if you decide you don't like it due to the shipping times from time of order.
Funny as I was going up the ladder from TT2 to Dave, it's GoldenOne's glowing review of the Dave which makes me take the plunge. It's also GoldenOne's review of Qutest which makes me jump into the Chord train in the first place.
The May review at the time hasn't been released yet, suffice to say I wasn't too enthusiastic about that video when it drops as I just got the Dave, but also I'm well aware of what Chord's sound signature is, but the sound signature of Holo is an unknown to me.
Anyway fast forward couple months, I'm knee deep with tweaking the best possible digital source, input, and power (Antipodes server, more $ than I want to spend on power cables, Wave Storm BNCs) for the Dave, plus including the M-Scaler. Would my journey be different and I'd be happy if I decided to go with May, I think I would be, but given the budget I'm prepared to allocate to this hobby, I would also be constantly, I think constantly curious as to what the Dave setup would have been. Where currently, I am content with the Dave and there isn't any itch to scratch as to "what would May sound like", rightly or wrongly that may be.
Another thing as well to consider would be, Dave is showing it's age a bit now, and the second hand market price is closer to the May KTE + a bit, so cost of ownership between the two isn't as wide as the RRP suggests. However, be aware that if you jump into the Dave boat, Dave standalone might not be enough, and like most, you would end up tweaking the surrounding setup further still.