I traded the 7f for the kef blade last month(bucket list) and they're both so good, their qualities are very similar regarding transparency, bass detail, the 7f goes a bit deeper while the blades have more output. The biggest difference is the soundstage, the personas have a tight small soundstage that's captivating while the blades do the same level of detail in a larger space.
My point is the persona 7f doesn't come up very often because they're endgame speakers and if you have a dealer that knows how to set them up I wouldn't worry about a next gen making them obsolete.
My point is the persona 7f doesn't come up very often because they're endgame speakers and if you have a dealer that knows how to set them up I wouldn't worry about a next gen making them obsolete.