From time to time, I get a pal here or there set up to fly AH Scenarios with me.
For that purpose, I look for stuff that gives a good experience, but at the low end of price.
Today, I tried out an nVidia GT 1030 ($80).  It works just fine for this purpose.  I use default graphics settings, except that I turn on antialiasing and turn off shadows and reflections, and set the slider to "none".
With that, I get about 60 fps flying around.
Unless I am fully enveloped (i.e., zero viz) inside a cloud, in which case I go down to 35-45 fps or so.  Of course, frame rate doesn't matter all that much then.  Frame rate goes back up once I get some vis again.
I'm using 1080p, and a computer with an Intel i5-2400 CPU @ 3.10GHz.  Also, DX11 version of AH.
I'm very happy about this.