kavula, here's some help with your "not sure" entries:
1.A.i) DPP44. Alternate solution is DP34 cascaded through 2 DP21s.
1.B.i.a) DP34 for up to 4 single tuners or 2 singles and a dual tuner. DPP44 for up to 4 dual tuners, or use the trunking connections to add another DP34.
1.B.ii.a) DP34.
2.A.i.a) Same as 1.B.i.a.
2.B.i.a) Same as 1.B.i.a.
2.B.ii.a) or DP Twin for 2 single tuners or one dual tuner.
And that's not even getting into legacy solutions.
1.A.i) DPP44. Alternate solution is DP34 cascaded through 2 DP21s.
1.B.i.a) DP34 for up to 4 single tuners or 2 singles and a dual tuner. DPP44 for up to 4 dual tuners, or use the trunking connections to add another DP34.
1.B.ii.a) DP34.
2.A.i.a) Same as 1.B.i.a.
2.B.i.a) Same as 1.B.i.a.
2.B.ii.a) or DP Twin for 2 single tuners or one dual tuner.
And that's not even getting into legacy solutions.