help choosing between kenya/tanzania safari locati

i’m planning a safari for summer 2026, sometime july-sept to catch the wildebeest migration. the budget is 40k for 2 people. i collected a few itinerary options from different TAs and am interested in information on which locations are best for a variety and high density of wildlife viewing. here are the options the TAs shared. if you’ve been to these areas, it would be great to know what your experience was! lodge recommendations are also welcome. Option A Ngorongo Crater Northern Serengeti Option B Loisaba Conservancy Mara North Conservancy Northern Serengeti Option C Tsavo National Park Ol Pejeta Consercancy Masai Mara National Reserve