Xavier,
The AuriCaps fit well enough. I had to hang them off the back side of the terminal strips, away from the tube sockets. The cap leads are long, so you can trim them to length. No noise issues for me at all. PCX will also match caps to a specified value, not just match pairs (I asked). Their matching service is reasonably accurate - I was satisfied with the result. I'd bet they would accomodate if you stressed the importance of a very close match to .01 and .015. IIRC, the .01uf caps measured around .01035ish and were fairly closely matched. I was able to pair the .015uf caps to .03074uf and .03084uf.
As for impressions, I'd say there's a slight gain in detail. I may be more impressed after the caps break in. Time will tell.
Chris