There's a bit of black bordering on normal games, nothing intrusive. Using overscan on workbench I was able to get quite good coverage. The RHS has a bit of unusable border. 4:3 Aspect was distracting. Too much side space. Geometric games like Loopz can look a bit stretched on 16:9. 4:3 Zoom was like playing Doom, too blocky.
The upscaler couldn't handle my normal A1200 workbench screen which is..I've forgotten... Anyway it was a 32khz mode 800 x 600 which looks great MUI. It actually came up double screen perhaps because my Panasonic thought it was 3D, dunno.
The colour looked great. Especially when I'm so used to the washed out look of most Amiga video expansion options.