[VoiceOps] Cloud PBX Provider in Mexico

Hello, I'm currently involved in a project to setup several new branch offices all over the world with a small local staff of about 10 people. The first branch office will be in Mexico. My plan is to have as less local equipment as possible and for telephone I'm looking for a Cloud provider. A quick research directed me to AstraQom [1] and would like to hear from your experiences with them. In addition I would like to hear what type and setup for the WAN connection to a Cloud PBX do you use. I'm unsure if it just enough to prioritize the voice traffic at the local gateway or if a MPLS connection to the Cloud PBX is needed. Thank you, Patrick [1] https://www.astraqom.com/