if you use a mixer all of your coins will look tainted...
a mixer doesnt wash them: it just distributes the taint more equally
i dont think there is an alternative to monero of you want to be anon (transactions and balances are anon btw)
what is so special with monero?

no public ledger (but i dont want to advertise it here... please just search for their ann thread

)
bitcoin is great but it wont ever be anon - imho even sidechains cant fix this
Black markets will all accept monero in the future, give it time.