Thanks In Advance, I Am Male 65. My Sugar Level

Thanks in advance,
I am male 65.
My sugar level is 120 fasting and 160 pp, on hypertension medicine of various types for the past 30 years. No family history of diabetese. I am on januvia 50 once a day and Telma 40 with nebistar morning and evening for BP. My questions are
1. Is januvia better than meteor in as first line management of diabetese.
2. I understand long term use of beta blocker is a risk for developing diabetese. Should I ask for change of BP medicine to other categories than beta blockers?