Have any VAC owners tried any KT-88's

I tried original NOS Genelex Gold Monarch KT88, and Penta Labs KT88SC (Shuguang) in my VAC Phi 110/110, and I heard very little difference worth paying the extra $800 for the Genelex tubes.

In another VAC amp (MusicBloc 160), I tried Valve Art KT88, and thought they also sounded very good.

Frankly, in the VAC amps I have owned, I have not found rolling KT88 tubes to offer much improvement over the stock VAC tubes (which are hand picked Chinese Shuguang tubes as far as I know).

I've used Genalex Gold Lion Re-issues in my Avatar Super. I would agree with Tvad that there was not much difference from VAC's stock tubes, though the price is about the same. I found it made a bigger difference changing the tubes in the preamp section of this integrated amp.

Cheers,
John

Thanks for the input.