I bought a second car - a high mileage golf mk6 1.4 TSI - recently. Mainly so my wife and I could start sharing the driving (she’s a noob) and I’d have something to pile the miles on while building a house.
I didn’t think about the the additional enjoyment it would bring to driving the ///M. It’s just fantastic now - feels super, super special after the competent but bland golf, and the golf provides the practicality plus a much more relaxing and economical drive when I want it. So, in your situation, I think I’d actually take a 3.0si plus something boring but capable (£7.5k budget?) vs the Z4MC on its own.
I didn’t think about the the additional enjoyment it would bring to driving the ///M. It’s just fantastic now - feels super, super special after the competent but bland golf, and the golf provides the practicality plus a much more relaxing and economical drive when I want it. So, in your situation, I think I’d actually take a 3.0si plus something boring but capable (£7.5k budget?) vs the Z4MC on its own.