As impressive as the T-90 is, wait til you see the T-14 Armata ... it has a 3 man crew inside a titanium armored compartment - entry hatch is inches thick - unmanned turret, fully serviceable in war zone by crew. Only delays in production will be fancy electronics going awry during testing. And will be very quiet. Due 2018. And is part of a family of 3 vehicles using the same tracked chassis.
One T-90 driver reported taking 7 rpg hits and one tow hit with no damage ... main gun effective up to 2,700 meters, autoloader - 8 rounds/pm even moving; 40 round mag; autoloader uses 22, rest loaded manually.
Some links
Mustafa is dead two seconds after he fires his Metis M missile ...
https://www.youtube.com/watch?v=2aTVRYCeNwg
Footage from the Russian tank operations (T90 & T-72s upgraded) in Aleppo, Syria
https://www.youtube.com/watch?v=rbTCtURggb8