Here is a great article from one of our excellent partners (Devolutions) which 7 points on choosing an MSP:
1. Services
2. Responsiveness
3. Coverage
4. Business Continuity and Disaster Recovery
5. Technology and Vendor Neutral
6. Communication
7. Consistency
2. Responsiveness
3. Coverage
4. Business Continuity and Disaster Recovery
5. Technology and Vendor Neutral
6. Communication
7. Consistency
A recommended read! Please see link below: