In your opinion, what is the best and most well optimized texture OVERHAUL (not like1/2k for performance but like how Tamriel Reloaded is built to be good for low end PCs). The ones I know of are:

Skyrim 2K
Tamriel Reloaded - I'm not using an ENB so a mess to install plus I don't like the artstyle as much
Vivid Landscapes

I generally go with 1k or the 1k/2k mix. So what are other ones? And full texture overhauls not like "One Mountain to Rule Them All" as I can get those myself.