For HH steaks, I use the gasser. Also add a foil pack of wood chips for some smoke flavor. Just the wife and I so the convenience is a plus. I normally hit steaks at around 550* F. Does not take long. Like the OP said, less than 20 min's from burner on to burner off.
That said, I'm going to purchase a travel size Weber and give it a try.
Weber WSM, Weber GA, Weber Spirit S-320
Charbroil Oilless Turkey Fryer
Wife LuzziAnn 1956 model.
Maverick ET-732, Superfast LSU Purple Thermapen
The Fun Never Stops at the BBQ Brethren Throwdowns
2013 Throwdown Grand Master. 1/2 of Team Paradise.