INKMARTHUR! You are ahead of the rest
I went with "Inkomartur" on tour "Northern Saga" (2007). Ilya Mezhul was the guide of our group. To be honest, this is by far the best guide I have come across. And when I was 21, I traveled a lot and with different companies. Neither in Akkord nor in Feeria was there such an excellent guide as Ilya. Moreover, I flew to the USA on a student visa and traveled with the world's largest company "Gray Line" on 3 tours (1st - Grand Canyon, 2nd - Yosemite National Park, 3rd - Californian cities of Carmel and Monterrey), and so not a single guide of this world company did not impress me more than Ilya Mezhul.