Before my house purchase, I had an idea to sell the TVR and Z4 and drop a bit of cash on either an earlier V8 Vantage or a V6 F-Type. This was around 2021.
V8 Vantage - it's an Aston. It looks awesome, inside.. dated and , and less refined and functionality than the E86. Power wise, it was good, but slower and less engaging than the TVR. I looked at problems and repair costs e.g. light cluster etc and it was pretty pricey, although the owners club had good guide to work on them yourself. However it was the fuel costs that got me. "If you need to worry about fuel, you can't afford one," I get it, but, The Z4 averages 30mpg and 40mpg on a run, but the V8 Vantage was 12mpg and 17mpg.
F-Type - It was the reliability that really got me. It was also slower than the TVR and negligible between it and the Z4. Add in higher fuel costs and tax and combined with the mileage I do, it wasn't worth it.
If I was going to change, and it would be "my car" (not taking the dog etc), I would probably go for an Exige or possible a 4CC.