Ha! I'm teetering on the edge of buying a MicroFreak. There's no way I could justify the cost of anything from TeenageEngineering - though £299 isn't as steep as I was expecting from these. Stay Strong!
Just do it, it's a lot of fun! You only live once, and if you save the box + bags and regret the purchase, you can sell it for minimal loss :)
I do really like that they're able to improve on the product with firmware updates. One of the benefits of software-controlled oscillators.
I'd love it if they'd open it up with an SDK like Korg's Logue series.
I like the fact that Arturia managed to squeeze new synthesis types and find a space for more presets in V5 update. I have my synth connected to NTS-1 which acts as a FX processor and i really recommend that setup as it sounds much better.