I too think Aeroflot is a very good and underestimated airline, with the slight exception of some of their ground staff in SVO. I have enjoyed my flights with them, and a musical group of mine were delighted with them when they flew to Hong Kong. The only thing is, it is very hard to climb the tree in their program, you really have to fly a huge amount. With Flying Blue it's much easier, with UX SUMA even more easy.