Word to the wise regarding the AliExpress B&Ws - my driver's mid blew yesterday after barely six months' worth of use. hilarious.
This was with no amplification outside of my normal HiFi amp and my Quidelix 5K DAC where I send my Bluetooth signal through.
thankfully I have some ES100Ks en route from Amazon and will do the replacement Saturday. I have 2x genuine B&W door mids, 1x genuine B&W center/rear mid and 2x genuine B&W diamond tweeters if anyone is interested. The diamonds are listed on eBay as a pair for less than the price of one new, and they're from a 2023 X5M. I just wasn't wanting to mix & match them with my Focals when I feel someone else can get better use of them.
TL;DR - beware of the counterfeits.
shame, they sounded fairly nice and the testing is nice too.