@Tall_Martin.
They seem similar on paper but I own both and they ride surprisingly differently. The Hello Dave is super stable but not particularly agile or maneuverable (super long reach and chain stays, and very slack HA), it’s also bloody heavy.
The Chilli Dog rides much lighter, is way more agile and easier to wheelie and pop into the air. The one complaint I have about the Chilli Dog is the paint is thin and really easily chipped, sourcing touch up paint is difficult too.
Both bikes have steep STA, are super comfortable to pedal and climb way better than I would have expected. Either are great options if you’re after a hardcore hardtail but for me the Chilli Dog wins.