Just wanted to put it out there in case anyone's looking. I know good adjustable aerobar availability is not great here, but this one just came back in stock today at starbike.com (not used them before, but they check out fine on trustpilot). Slowman reviewed it here and I've just picked it up for £465 which seems like a good deal.

It's also available at Bike24, although slightly more expensive.

No idea how fast it is compared to the competition as I was mainly looking for adjustability, but hoping it can help a few here.