I’m in a pickle

It’s date night. I’ve got 2 Denver cuts and plan on cooking them in the sous vide with a bit of olive oil and salt/white pepper.

Dilemma: I don’t have my cast iron. I have a stainless steel pan and a gas range and high fat butter. Orrr I have a basic Weber charcoal grill. I haven’t seared steaks or cooked steaks in either. So I’m looking for recommendations.

Should I sear my steak in a stainless steel pan with a butter baste or should I sear it on a charcoal grill and try to get the heat super high?!?

Thanks in advance.

Edit: Crisis averted. She has a cast iron!