I have the 5 Inch display (chs_5inch.dev1_rom1.2) for a couple of weeks but I have the following problems:
5 Inch display
The newer software loses connection within seconds. Version 1.5 works best (only disconnects video themes after some time) but both 1.7 and 1.8 lose connection every time!
5 Inch display
The display does not 'boot' when a sd card is inserted. Formatted the card with the tool from the download page and followed the instructions (fat32, etc) but with a card in the display you only get a grey display. And it does not connect to the pc anymore.