I've been using Tri-Flow for years. I don't know if it's ideal for geared bikes (i.e., I don't know if it dries out too quickly when it's "used" more for shifting) but on the SS it's great. I'm also pretty meticulous about my drivetrain, though - I clean it at least once a week. I figure I can let the rest of the bike get dirty and it's no big deal, but my drivetrain needs to be in good shape all the time. Again, this is probably much easier with a SS than a geared bike because it takes me only a few minutes and I don't have to worry about buildup on the derailleur pulleys.