Whats the best mtl refillable pod vape available?

Been using refillable pod vapes to vape 20mg saltnic liquid for a while now, had a few like the Smok Nord, Xros 2, Caliburn G2 , and now the Caliburn G4 mini which i absolutely love. Doesnt leak, tastes great, pods will hold up well.

But whats the best device available rn? Been thinkin about getting a second device. Or a new device and keep my G4 mini as a second.