I run an 01 4.4
I’ve recently driven an E70 4.8 which I found it to be a bit sluggish- or maybe requiring more throttle pedal travel- to get it going at a bit of pace.
I did drive an E53 4.8 a few years ago but didn’t find it different enough from mine to warrant buying it. I regret it now though as it was only £2000..

Anyway, I’ve just replaced the main driveshaft giubo trying to chase down a vibration. I’m probably going to keep it now as I reckon prices will start to creep up in the next 5 years or so due to constant pressure to ‘tackle climate change’ or some scam so old school V8’s will be sought after. Just my opinion.