It seems this is the best forum for this question but if there is another please move it appropriately. I have a Specialized Sequoia Elite 2007...an aluminum frame with carbon fork and seatstays. I have upgraded the wheelset to Mavic Open Pro with Ultegra Hubs. I like the bike and can't afford a full carbon frame. Is it worth the cost to upgrade to an Ultegra groupset. The bike is a triple, nine speed. If I look for specials I can get it done fairly inexpensively. If I go back to the 6500 series parts, it's even less expensive; although some of the parts, like bottom brackets seem to be hard to find. I try to ride between 70-100 miles per week during the spring, summer and fall, but that is a goal and I do my best to reach it. I'm just thinking about this and would like some feedback. What do you think?