Looking for a softer tube

Currently using Philips SQ E88C tubes in my preamp (Lector Zoe ) and am looking for another tube that can give me the same detail, but a little warmer / softer on the top.

The Zoe can use a variety of different tubes :


So open for suggestions.
I have tried Mullards in the past and recently, and I seem to get the ones that are microphonic.
Check with Andy at Vintage Tube Service's. His check process is impeccable. Tell him that you want "phono stage" tubes which are the least noisy.