I don't know if I'd suggest them early on when bootstrapped, but definitely worth a gander once larger or VC-backed.
Mercury's UX is sexy AF and enjoyable to use. They did have an internal screw-up with our initial account setup due to a mix-up with their partner bank (Evolve Bank & Trust), but their customer support is top notch and got it resolved quickly. They also have some nice promotional deals. In comparison to SVB, though, they're not nearly as high touch and also don't have physical locations.