Have you developed for IE10 or 11? They are far more standards compliant than any other version. In fact IE11 surpasses Firefox in some areas (full support for Flexbox for example)
"standards complaint" - Nice, I think that nails it.
Lately Microsoft complains all the time that they are fully standards compliant, but when it comes down to it, I always end up having to special case IE so it never really feels that way.
Of IE? Considering the other versions, that's not exactly a high bar to set.