Cyn,
We have been on a few tours, but only in locations we would have trouble getting around on our own or with major language difficulty:
China (2005) I don't remember the name, but it was not one of the big names. Good tour, about 20-24 people, all congenial. Different guide in each of three locations (Beijing, Xian and Shanghai), with intercity flights. Great hotels and comprehensive experiences (historical and archeological sights, musical entertainments/shows, special traditional meals). Helpful, knowledgable guides, who were excellent in setting us out on our own for free time. Obvious constraint on guides' parts when asked about the Tienanmen Square events. No one in our group put them on the spot as we realized they were not free to discuss them. Overall, a well-run tour, but no spark lit. I am glad we did it but, for me, I don't feel the need to return to China. We were taken to some factories/workshops where we might purchase some Chinese products (silk items, pearl jewelry, cloisonne vases), but we didn't mind because the tours there were really interesting and educational, and there was no hard sell. Good price and value but not outstanding.
Kenya (2009 or 2010?) Lion Tours, a Canadian company who used a Kenyan company on the ground. Outstanding! Just the five of our party. Three safari locations, all top-notch lodges with great food and some entertainment. Same guide for whole tour, Simon, really, really knowledgable on Kenyan history, topography, and especially wildlife. I wish I could remember the name of the on the ground tour company. It was a truly memorable trip. 8 days/ 7 nights on the ground. Great price and value.
Turkey (2015?) Insight Vacations. Not their higher-priced tour, and I think they no longer do the one we took. Two weeks, same guide (terrific!) about 2 dozen people on the tour, mostly Australians, Canadians and Brits. We were the only US tourists. Covered all the major places/museums/sights, stayed in really good hotels and had wonderful lectures from the guide while on the bus, about everything we saw. It was like a mini history and culture class. Once again, congenial co-travelers. We, of course, didn't go to eastern Turkey, so no Mt. Ararat. Not safe there, but we felt safe and comfortable wherever we were. DH and I arrived a day early, so did some sightseeing in Istanbul on our own and walked a lot without any fears. Another good price for the two weeks.
(Do you see a pattern here? We look for bargains, but are too old for a backpacking type trip. Tauck tours and Viking cruises are more then we want to spend.)
Egypt (2019) My #1 bucket list completed for my 75th birthday. Trafalgar Tours, 12 days including a 7 night Nile cruise and day trip, by plane, from Aswan to Abu Simbal. 39 people, and only one couple who were clinkers in the group (Hogging the front of the group for taking pictures of various things/places. Probably clueless about other people...it was all about them). The rest of us had lots of fun, esp. on the cruise...dancing, entertainment, sitting on the open top deck with a cocktail and relishing the sights along the Nile. Our guide was a college teacher who made the whole trip great and educational. It never felt like we were in a horde of tourists. Our fellow travelers were pleasant, laid-back, and fun. We were different age groups, not all couples (e.g. some siblings etc.) and enjoyed each other's company. We got to visit all the major sites, and in depth. Again, top-notch hotels and our boat was not huge, with room for probably and 100 passengers. There were only our group and one other of 8 tourists on board, so no crowding on board. We loved the cruise! Arranged through AAA and again, moderately priced.
We have never used OAT or Odyssey or Viking or Road Scholar, as they are all usually pricier than we want. But we have been happy with our choices and don't feel we were shortchanged in any way.