I was a big fan of the 205 - it was a game changer in my opinion. An absolutely lovely car - especially in terms of the interior and the technology features. MB really pushed the other manufacturers to lift their game and we can all enjoy the benefits when you look across the brands now. They had their various quality issues in terms of build but overall they're a really great car. Tech was everything you could ever want and I have to say that I'm still missing some of the features and ergonomics.
I could have been tempted to step into another one - I tested the C43 and loved that, but due to demand discounts were tough to get. Then I started looking at the E to step up a notch. To touch on the above point, the W213 for me just looked too similar to the 205. No question it is a lovely car as well, but I wasn't a fan of the dual iPad type dash, nor the exterior styling. Ultimately BMW put together a better package and offer to step into the 540i.
I much prefer the styling of the G30. It also offers some nicer tech features that MB still don't provide Aus customers (i.e. connected drive, traffic sign assist, etc.). I'm very much looking forward to the car as I couldn't actually find one to test drive (especially with the integral active steering).