This was one of the first films I bought when I got my PS3 and started grabbing Blu-rays left right and centre. I bought this edition, which was released in 2006 and is old enough that it uses MPEG2 encoding.
Just a few weeks ago, I purchased cheaply this 2015 edition with a much better transfer using an AVC encoding on a BD50, twice the size of the original disc.
I don’t see the need to upgrade to a 4K edition. I’m just contemplating whether to complete my James Cameron collection by purchasing the Spanish bootleg of True Lies.