I have a CX3 which is almost identical to the CX2. A few improvements and a annoyance that the thing is built inside it's canopy so you need to "build the ship in the bottle" when doing repairs.
The CX3 feels fairly nimble indoor in close quarters, but feels rather slow and dull outdoors.
It has a top speed forward of about 2 or 3mph, so any wind at all and you spend most of your flight with the right stick all the way forward trying to hover.
I would have thought that the mSR would fair better outdoors. It looks a little lighter, but it can at least shift a bit faster than the CX, allowing it to make some progress into a headwind. Haven't flown one though.
EFlite are also releasing the "SR" soon, which is a non-micro version of the mSR.