Well, I don't like much about it, honestly, other than the fact that it IS a CNC mill with a tool changer.
The accuracy is very poor. The mill has a published positioning accuracy of .0004"
and it is very difficult to get the backlash parameter set just right in order to leave an acceptable transition at arc quadrants. I will painstakingly set the backlash one day and it'll be different the next, from one material to the next. The transition line that it leaves at arc quadrants is huge, not acceptable for any part I'm interested in making. Rigid tapping employs a "fudge factor" instead of having an accurate spindle encoder.
The Centurion 7 control is not very refined. The buttons and handwheel are total junk. Punch a button hard and it pops off. Change from one screen to another and common softkeys change position. The names of the softkeys don't make sense. You just have to get used to them, there's really no rhyme or reason to how the screen is laid out.
The conversational is not that great. For the most part, it's simply built on top of G-code canned cycles. You fill in the values that populate the G83 command, for example. You input a program block of "drill cycle end" for G80.
The control crashes or freezes up often enough. Do something wrong and you have to shut off the machine.
The parameters are set up horribly. I've had the stupidest problems because of ass backward parameter settings.
The machine's operator manual is not well written, not very thorough. You have to figure out what someone's ambiguous words mean or use trial and error to figure out the G-code. There really is no explanation of the conversational programming, it simply refers you to another page in the book that does a poor job of explaining the G-code canned cycles.
The machine moves in as many increments as you turn the handwheel, so when you roll it around to move the table it sounds like it is running over gravel. The Z axis makes this atrocious noise during program operation, like a goose being stabbed or something. and if you rest your head on the machine while Z is moving up and down in rapid, you can hear the whole head wandering, hunting down the ways. A slow and ugly bumping sound, not the smooth movement you'd expect from a machine tool. The whole machine sounds awful.
Now I will admit, I learned to mill on newer Hurco VMX's with dual screen control. I thought Hurcos were shoddy machines with a marvelous user interface. I thought they were surprisingly accurate machines, cheaply made overall but with that marvelous Ultimax dual screen control, you can forgive the weak points.
The Hurco blows this thing away on, I would say, every little detail of quality and usefulness. I would take a 10 year old Hurco VMX instead of a new RW15 as I understand it.
I don't know. I feel bad, I'm always trashing people's favorite tools, but I don't like this Milltronics machine.
The controls made sense to me. It's pretty much fill in the blanks. 
