who gets a 10 rating ?
Lol... I don't know if such a broker exists.
what's Mirus' failings ?
For me, mainly for customer support reasons. Things like you ask them something in an email. A few days later you didn't get an answer so you call them. They say "Yes, will send you what you asked for...". A few days later, you still didn't get what you wanted.
what's a better charting+feed than NT+ZF ?
I have tried many different combinations and I think NT+ZF is a good product. I used to have IQFeed and I was very satisfied.
Also, when you go with Mirus, you will have to choose if you want to clear with RCG or Dorian. I chose RCG but I'm not sure they are the best either for the same reason as Mirus. I sent them an email and they answered back with 1-word answers never giving a good answer.