Flown domestically few times because I had no choice and it was frightening! Yak40 a 3 engined bucket of soviet bolts with less get up n go than a skoda...Moscow to Ulyanovsk is 500 miles & it once took 3 hours cos we were flying into 50 knot headwinds, felt like the plane was going to be pulled apart in the turbulence! Having worked in Soviet Aerospace for 20 years, I know that they do build their aircraft for harsh environments & the crews are raging alcoholics....
Internationally they use Western aircraft, same crews, shit transit stop, shit customer service & Americans may have nuked Moscow by Xmas....
My advice would be stay well clear of them....be a bit different to Emirates business class Reg, how would you cope?