I bought a descent g1 and descent g1 solar. I also own an instinct solar.
The descent g1 solar is SIGNIFICANTLY dimmer than both my descent g1 and instinct solar, both without the backlight and backlight at all levels. I have compared the brightness in many situations both indoors and outdoors.
Additionally, polarization or display wash out is a problem.
With backlight on, relative to line of sight, at 0 degrees (i.e. screen facing UP) to 90 degrees (i.e. screen facing eyes), descent G1 and descent G1 solar both get very washed out. But the instinct solar does NOT get washed out. These angles are the normal use range.
With backlight on, relative to line of sight, at 180 degrees (i.e. screen facing DOWN) to 90 degrees (i.e. screen facing eyes), descent G1 and descent G1 solar both do not get washed out. But the instinct solar DOES. These angeles are NOT the normal use range, so the instinct solar does not present a problem, but the descent G1 screen visibility is significantly diminished.
These may seem like minor issues, but when you're paying this kind of money with no expectation of inferior display legibility over a last generation watch (instinct solar; I know they're different watches but the displays are similar), it's just extremely disappointing. At greater depths, divers will need good legibility with the backlight and I'm very concerned that won't be met and that it'll be a struggle in the water.
I've contacted Garmin but haven't heard back yet. Hoping there's a resolution that doesn't involve returning and going with a different brand altogether. 
