My favorite 9mm is the Browning Hi Power, followed by the CZ 75B. If you want the Sig, go for it. It ultimately comes down to what you like.
FWIW, I had a Glock 19 and liked it a bunch. I just prefer steel pistols.
“If ye love wealth better than liberty, the tranquility of servitude better than the animating contest of freedom, go home from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains set lightly upon you, and may posterity forget that ye were our countrymen.” ― Samuel Adams