I have owned an Eagle (actually, they are made by BPR, in Italy) CP40 for something like 6 years now.
I love it, its bulletproof, and does everything I ask it to.
They have really good service (we broke a $3 pin once, it was in the mail that day) stock parts and custom rolls, and in general are just good guys.
I actually visited the factory in Brescia, Italy, when I was over there a few years ago, I think I was the first person ever to call and ask to do that- an engineer took me around for a couple hours, then personally drove me back to the train station- good people.
They are good machines, I would not hesitate to buy another one.
As for rolling thin wall tubing- the two roll machines will do it, but two rolls is definitely a design compromise over 3 rolls.
The way they compensate, usually, is by using serrated rolls for flats, squares, and rectangular pieces.
On the round tubing, however, you get nice smooth rolls, and they can slip sometimes- its really a case by case basis. I occassionally get a part where you need to manually help it thru, especially at the beginning, if you dont wanna reef on it so tight that it will leave marks.
With a two roll machine, it will roll most anything within its window, but sometimes your need to use a cheater bar to get it tight enough to roll.
I would consider sending a 4 foot piece of the actual tube you want to use, UPS, to Eagle, and have em roll it in a CP30. And then send it back, and you look at it.
With that thin of a tube, you will get a bit of ovalizing, and only you can decide if its acceptable.
Of course, if its not, the next step up is $30,000 plus Pines style mandrel bender, with custom tooling for each size tube...
Me, I am betting that with a bit of fussing, the Eagle machine will do what you want just fine.
Rolling curves is an art, not a science, and every material, size, shape, and even mill run can roll a bit different. The LED readout helps, but is not an absolute indicator.
I love my Curvatricci, but it does not run unattended, and the more you use it, the better you get at it.
Which is not to say it wont give repeatable, consistent results, it will.