I’ve played the swopping tube saga in the past with my old Marshall guitar amps and there are slight differences or some would say huge differences but I didn’t notice it
Pre Amp tubes are easy to swop around with some great brands such as JJ, EHX, Svetlana, Groove Tube etc etc
Changing worn or faulty tubes is a must but swopping good tubes for bass tone nirvana seldom happens in my opinion unless you get the very expensive tubes but even then I’m not so sure
As Lozz said Watford valves are great and very helpful