If you enjoy DCS give VTOLVR a shot as well. Fantastic fun.
As in, it's totally possible to have completely clear text on DCS screens and labels even with an older lower res headset like the Valve Index, as long as you render the game at a sufficiently high resolution (via SteamVR settings or similar).
Just wanted to point this out, since a lot of folks aren't aware how drastically increasing the render resolution (even far past the native HMD panel resolution) affects image clarity.