I loved the 425's, in fact when I originally got the 8's they didn't sound OK to me, I preferred the 4's.

When the 8's bedded in a bit there was a leap to be fair, but there should be for the leap in price!

A bit like how I thought my 72 SE's were the best thing in the world until I dropped a pair of 8k SE's in the living room!

M Customer since 1991...
2 Channel: 818v3 into 8000SE's running Roon on a Nucleus One with QNAP TVS-871-i7-16G 8 Bay NAS
Cinema: 861v8, 2 x M6's, 7200HCSE + DSW
Office: Explorer 2 into Shure SE846's
Kitchen: AD88
Other Stuff: Philips 77" 4k OLED Ambilight TV. Hue Lighting System, ATV 4K & a lot of Apple stuff...