IC between Lamm pre and McIntosh amp?

I want to upgrade the IC between my LL2 deluxe preamp and my MC275 amp and would appreciate some feedback. The existing IC is the cheapest Nordost (about $50). I'm willing to spend up to $400 on new, used, or DIY. I needs to be 3 feet long and RCA.

On past threads Lamm users have reported very good results with Purist Audio, so that would be Museaus (new or used) or Elementa Advanced (used).
Somebody I know uses this same setup with Kimber 1036, but at $1600 is way out of my budget.

I also wonder if DIY would be a good option, like VHAudio with Eichmann bullets.

For reference, I value soundstage and imaging..."seeing" the performers in front of me, so body, etc. Timbral accuracy is secondary, to the extent is not grossly off, of course. FWIW, speakers are B&W 804S, Rotel RCD1072 CD player, ICs are same cheapest Nordost, speaker cables are DIY magnet wire, PCs are VHAudio Flavor 4.

Feedback very welcome!