Reporting question for Vacuum Tube - EL84M, Sovtek

Vacuum Tube - EL84M, Sovtek

I have a Hughes&Kettner TubeMeister 18. It has 2 EL84 power tubes & 2 12ax7 preamp tubes. I would like to upgrade the stock tubes with matched pair and some punchy gainy character driven tubes. Please recommend some options Thanks Kenne