LG only has 2 HDMI ports so might be inconvenient in the future.
Regarding the crystal HD, if there is a Croma/RD near your house, go there and see in person. They usually have the offline verions of the AUE60/70 which is AU7700 and AU8000 I think. They also have the AU9070. I personally liked the quality of the AU 9070 the most, display looked much better compared to the Chinese counterparts.
However, depends on the size you want. Many of my friends have Vu and personally liked its quality for the price it offers.
Try bargaining the AU9070 for 41-45k. I had managed to get the price down to 41k but in the end was too late and went for Q60t instead.
Although, if you want 4k@120hz, then I think frame 55" is the lowest you can go. Not sure if any 43" tv offers 120hz. AU9070 has a HDMI 2.1 port and has 1080p gaming at 120Hz and 4k@60Hz and also has VRR.
Vu I don't think has any of those features though. Not sure about the input lag on Vu, but from what I researched, it was very low on the AU9070 and is good for gaming.