For what it's worth the 99 series has had some positive reviews:
LG's largest and best LCD TV LG NANO99 works great for both gaming, movies and regular TV watching. A very capable big screen!
www.lbtechreviews.com
Un-friggin’-believable. That’s how I sum up in one word the LG Nano99 Series 75-inch 8K TV. I can’t proclaim it the best TV on the market. I haven’t
www.gadgetguy.com.au
LG’s latest NanoCell 8K TV isn’t quite the TV of the future but, if you can afford it, it’ll suit the present moment just fine.
www.pcworld.idg.com.au
I've ordered at the 65in version of the Nano99. I've had LG (and one Panasonic) IPS FALD sets since 2010 and I'm more than happy with the black levels etc, particularly as I rarely watch things in a totally dark room.
Of course OLED is better, but like a few on these forums I just don't want the worry of burn-in, even though things may have improved with OLED tech in recent years. I would have gone down the VA route years ago but have never been totally content with the viewing angles. I tried a Samsung 950R last year, in the hope that the wide-view filter had improved things in this area; it had, but I found the colour / contrast-shift in the vertical plain really jarring (something I wasn't really expecting) and returned the set.
As has been said many times on this site, there's no such thing as the perfect TV. IPS with FALD suits my purposes for the time being, flaws and all.