A better option for what? Either one of 'em will require you to make the bra$$.
The .224 Kritzeck is too new(invented in 2018) and unproven. Doesn't do anything other cartridges do not either.
https://www.revolvy.com/page/.224-Kritzeck
The .224 Donaldson Ace(nobody has heard of who or when Donaldson worked) has at least been heard of by RCBS. (Dies are Special order at $151.95) And by the author of "The Handloader's Manual of Cartridge Conversions."