The 3x-mx arrived today.
Initial impressions

Batt holder is VERY CRUDE. Will look at replacing it.
Batt compartment is designed for 8batts, so they just stuck in a 4batt holder with a rubber spacer to take up the xtra space.
Wheel is small, too small ??? Much Smaller than any other car TX Ive used(Spektrum, JR, Fut etc)

Obviously the LCD screen is small, but is well thought out & easy too use.
Manual trim buttons on top are easy to access and trim via buttons is displayed on the LCD
Overall, doesnt feel cheap, feels nice & solid , comfortable in the hand. Feels a bit heavier than it actually is.

Im sure the actual radio side of thing will be perfect, thats the reason I bought it....

Perhaps, if you can afford it, the MT-4 would be better.Its not too more expensive
But I still had to buy more rx's so the cheaper MX-3X fits the budget a bit better