I've been with Mirus Futures for 6 months. One reason I chose Mirus because they assured me that they supported NinjaTrader so I would not have to try to deal with NT support.
I was satisfied with Mirus until about a month ago when they mandated an updated version of Ninja Trader and I began having problems when managing trades.
A much-needed fix for those problems finally appeared in the form of another update, but the latest version of NT will not download to either my XP-Pro computer or my Vista laptop.
After trying and failing to deal with the error message I kept getting, Mirus tech support told me that Pat Shaughnessy who would be back in the office this morning would know what to do...
Mr. Shaughnessy's solution was to tell the tech support staff to stop helping me and refer me to Ninja Trader...I could hear an irate Mr. S in the background berating the staff for bothering him with the problem...I was dropped like a hot potato...
Since Mirus Tech Support had removed the earlier faulty-but- functional version of NT from my computer using remote access, I now have no trading platform at all...
The last time I had to contact NT support it took days to get a response....
So that's my experience with Mirus...I'm a beginner with a small account...those with larger accounts may have better luck...