Wow those must be some big hands there Marc.
I'm not 100% sure mate, from what I've seen you don't need the DMSX2 version it just needs to be Spektrum or JR. Or you can get the RTF version like the one in Marcs pic for just around $200 with charger, spare parts, different set of blades and a couple of batteries.
I love mine and have since about 5 minutes after I starting flying it, flying it straight after flying my 500 wasn't a good idea because like Marc said the mCPX is a bit more nimble.
But you can mostly fix that by changing your expo.
But that's also a huge plus for it, you can have a play with it and try things you don't have the nerve to try on a bigger one because 99% of the times it will bounce off the ground and be ready to go again straight away because it's so light and designed well.
I did my first ever inverted flying today,of course I didn't mean to do it but I was in idle up 1 and somehow it came out of a funnel inverted.
I lasted about 7-10 seconds before I tried lifting the nose to get right way up again but in my panic forgot that when you're inverted the controls are reversed and went downwards instead.
It skimmed blades first then flipped before coming to a stop.
Quick check over and it was right to go again.
There's two others heli flyers at my field that have been so impressed with how stable it is that they have bought one too.
I'm not saying go get one, only have a look around before you give up completely. Maybe see if there's anyone near you that has one or ask a store to give you a demo.
The mCPX is the only 6 channel on the market that small, so IMO you're getting something that is a lot more upmarket and better to fly than your usual micro heli.