Tubes for Jolida Fusion Preamp


I have a Jolida Fusion pre which takes 2 12AX7 and 2 12AT7 tubes. Looking to upgrade from stock tubes and request herein recommendations. Thanks.
mesch
I'm happy to report that the Gold Lion Matched and Balanced (including triodes for another 5 bucks each) Gold Pin Premium 12Ax7s sound amazingly better than anything I've previously used in my Jolida 502p...and they're barely broken in. Maybe the hype is true after all.
Wolf, thanks for the followup. Have not yet moved on tube purchase, will soon.
Well, I ordered a set of Mullard tubes. CV 4024 (at7) and CV 4004 (ax7) platinum grade from Upscale Audio. Was looking to warm up the upper mids and lower treble and was advised they would do that. I will get back to everyone after a comparative listening session. It is likely that these will not be the only tubes I purchase, just my 1st foray into tube rolling. Thanks again.
Those AT7s with the gold pins are tempting and I hope they have those when my 4024s wear out.
My tubes have arrived. I will keep everyone posted as to my findings once I have installed them.