It's all basically been said but if this helps; I have a Jaguar F-Pace fully loaded HSE, brand new this Jan sat on the drive & that's where it stays, as I always pick up the keys to the x-power.
Comfy & refined as the Jag is, I forget about the MG's minor squeaks, rattles & tech that feels like the Lidl knock-off of an ipad (works, but you can tell it's half the price), as soon as I put my foot down.
When someone lets you out of a side road, you're off and up to speed by the time the diesel F-Pace would still have been deciding which gear to pull away in.
Still like having a big diesel for holiday trips but you can see the end is near for them.
If there's one thing I wish I could transplant into the MG, it would be the Jag's magic button on the steering wheel that sets all the driver assistance systems to your saved profile. Set it up once and then a double press when you get in the car turns off anything you don't like. Would have loved the Jag in matt racing green though...