The best thing I ever did with my Alfine 11 was to get rid of it. I'm a qualified engineer in different disciplines and a former cycling journalist bike and component tester previously. Apart from the occasional slipping gears, odd crunches etc (if that is down to cable tension then the whole design is too sensitive/picky) the first thing I noticed when I went back to derailleurs was how much easier it was to peddle the darned bike. Yes, planetary gears are noticeably inefficient compared to derailleurs. I loved the idea of a 'simple' bike with no ugly rear derailleur, no front mech, one control on the handlebar etc. The truth is, 1) you cannot remove the back wheel easy, it's a right struggle if you get a puncture and you have to carry a large spanner, 2) unless you have horizontal dropouts you need a rear chain tensioner so the clean lines at the back are not actually achieved, 3) the system is inefficient to pedal (hard bloody work!), 4) it needs a major strip down and overhaul every couple of years, 4) it is difficult to set up to achieve good clean changes and stability in both directions, 5) it is not lighter than a derailleur setup, and 6) the range and jump size between gears is poor compared to derailleurs. No, I have not looked back on my (three?) years trying to get my Alfine 11 working to my liking, but I'm glad I tried it, it gave me a huge insight into planetary gears in general, and the state of the art as far as Shimano is concerned. I came to the conclusion that for someone tootling around on a town bike in a hilly area they are probably a decent option, but for anyone else - even vaguely sporty - for the reasons I outline above, best left alone. And I really wanted it to work for me. Sadly, it didn't.