Personally I see no point in getting the 9070 when you can get the 9070xt for only £80 more.
I was undecided myself on what GPU to get, initially thinking 9070xt or 5070ti.
But in the end I bought a 9060xt 16gb thinking it can be temporary but will also help me better evaluate what I may need.
To be honest I don't play many AAA titles or recent new games.
On many of my older games I am seeing 90fps at 4k ultra, around 160fps on high. 1440p ultra at 160fps, 1080p seeing 360/400fps. Titles such as World of Tanks and Warframe for example a 9060xt 16gb has no issues with. I run a 4k 160hz main display with a 1080p 120hz portrait next to it.
When I start playing titles that drop below 60fps or my favourite games get below 120fps, then I may upgrade the GPU, by which point mid range GPU's will have 24gb of memory and be faster than the current gen.
Rest of my PC is a 7600x at stock with gen 4 NVMe drives, Arctic Freezer 36 and P series case fans. Quite happy with it considering it has cost far less than I originally planned.