I've only handled the Chaves between these two, and they are top notch. They're somewhat chunky but just amazingly well made with fantastic fit and finish, materials, action, etc. Really it comes down to which designs appeal to you more. Something to consider (or dismiss, totally up to you)...not too long ago there was a bit of a hubbub with a fairly popular you-tuber who had pointed out some issues with a recent Liong Man knife (I forget the model) with an overly weak detent among other issues, and the response from Mah was pretty childish and inappropriate and left a lot to be desired in my humble opinion. So I personally might think twice before sending my money to him.
Reate also makes some Begg designs which have been stellar in my experience. Their own designs are also great.