Choose your paranoia level:-
1 - 1 device, 1 browser for everything (don't care/no money/clueless/life is too short)
2 - many devices, 1 browser for everything (still don't care but has money)
3 - many devices, different browsers for different tasks (care a bit)
4 - different device per task (overpaid/overthinking/properly cautious)
I think I am generally level 3 with a bit of level 4 for some tasks....