There are more detailed comparisons from makho’s Backlight Mod Notes. I have made some of them and there are huge differences:
| mod | Soldering | Custom Lens | Pixel Grid | Multi-Brightness | Adjust Potentiometer | Color Temp. | Power Consumption | |
|---|---|---|---|---|---|---|---|---|
| AGS-101 | yes | no | yes | no | yes | warm | very low | |
| ITA (DSi) | no | no | yes | touch | yes | neutral | low | |
| IPS V2 | optional | yes | no | optional button | no | neutral | high | |
| Drop-in IPS | no | no | no | touch | no | cold | very high |
The FunnyPlaying ITA kit uses the DSi lower screen, which has the same display size and same resolution as AGS-101 but without ghosting, and with brighter better colors. I have been playing it quite often recently and satisfactory. However, it does require a bit of shell cutting also on the speaker side to host the screen ribon cable. Compared to IPS V2 the viewing angel is not that great and response time is a bit longer.
Besides the above differences, the kits also result in different weights being AGS-101 mod the heaviest > ITA > IPS V2 > Drop-in IPS.