Which Cell Network Would Your Recommend in the Sloop?

A South Loop newbie is having issues with getting good cell reception from Verizon and wants your recommendation:

As a newbie to the South Loop, I was surprised by the lackluster cell phone
reception we get (using Verizon). My plan is up and I'm thinking about
switching... any recs for strong signals in the neighborhood?

Personally, Verizon works pretty good for us.

(hat tip: TJ!)