I tried posting this in the road forum, but I discovered that it's crawling with snobbish cyclists who are obsessed by bike weight, and don't understand my desire for more durable components. Sram components are said to be lighter than their shimano counterparts, which makes me wonder if its components will wear down faster than shimano components. in the grand scheme of things, durabiity is probably not a big deal, but it's still more important to me than bike weight, which is really only relevant if you're climbing or racing. double tap vs STI is also not important to me. I don't care about shifting noise or how I slick the levers... durability..

I ask because I'm thinking about getting a gravity bike from BD that carries Tiagra 4600 components for $600. However, BD will probably give out some sweet deals toward holiday season, and I've seen some great deals with sram bikes.