i think if i was going to wager i would wager on crypto note at this point, still studying it's code,

i don't trust anything not open souce either......

i think dark is a lot more hype than reality......

one thing for sure multiple hash algorithms together are weaker than a single proof of work algorithm, that is a factor to consider as well , but maybe for the future..... still it's been proven mathematically



edit 1
if your wondering which is better from a technology standpoint for anon tx

edit 2
cryptonote is quite a while behind development of wallets to be used by most people but  if you don't mind the command line it seems to test well

edit 3

I am uncertain really, still studying the whole thing, reading other peoples analysis of the code, running some tests (on cryptonote )
may have better answers with some actual facts from code and examples in a month or two......