I have two new drivetrains sitting on my desk waiting to go on. Both basically Shimano XT 11 speed with RF cranks. I hope the drivetrain wars keep making these parts cheaper as they get less and less popular with most people. I like how easy they are to get in my hands, the price and the function.
Every time I read an excellent drivetrain related article like this I get tempted to really optimize my setup by picking the absolute best parts in each category and combining them into the Death Star of drivetrains without the pesky fatal flaw that a single X-Wing can exploit....then I realize I am no Resistance Fighter and I've forgotten what was the best combo and I grab an XT 11 speed cassette, derailleur and shifter...throw it in my cart and feel guilty about what a great deal it is and the fact I didn't buy it at my LBS.