LowCel;3096751; said:105/Ultegra is a very durable build. As long as it is adjusted properly it will shift as nice as dura-ace. The wheelset is not a Mavic wheelset. It has Mavic rims and formula hubs. The formula hubs aren't the best in the world but they should make it a couple of years without any issues. Sapim spokes are nice so you shouldn't have any issues with those. Most of the time you can lose as much weight by just upgrading tires and tubes as you can by buying new wheels and it's a lot cheaper. The tires that come with it are pretty heavy, I'm sure the tubes are as well. Then again, you could aways spend about $2,000 or so and get a wheelset like mine.
There is nothing wrong with the crankset. It is a compact crankset so that should work out great. Overall I wouldn't change anything except the tires and tubes. If you plan on upgrading a bunch of things you are better off to just purchase a nicer bike, it will be much cheaper than upgrading components later.
totally agreed.