Any of the bikes you listed, and any bike in that range will very likely have all the quality you need. One of the main concerns should be the road bikes intended use - racing or more laid back riding (often labeled "endurance"). Some of this will also have to do with current flexibility. The aggressiveness of the bikes in this range may vary - typically the more "racy" bikes will have slightly shorter headtubes (shorter head tube = lower handlebars = more agressive). Some things can certainly be changed within reason to "customize" the bike to your body - for instance if you are feeling a little stretched out, a slightly shorter stem can be installed (or visa versa). The stem can be 'flipped' lowering or raising the rider, and headset spacers can be added or taken away to further fine tune.
Of the bikes you listed the Giant is going to be the least aggressive - the M (with the 54.5 top tube) may be a good fit for your height, and has a 165mm headtube (the longest of the bunch, which will put you the most upright). The BMC's headtube for the same size (54) is 145mm - a little more aggressive, but not as shallow as some of the bikes on the pro tours who's headtubes can be 130mm or even less. I couldn't find any geeometry stats on the Dolomite.
Since you asked, personally I would go for this baby but that's based on personal preference:
http://www.bikeradar.com/road/gear/category/bikes/road/product/review-cinelli-experience-12-46195
It is a bit beyond the $$ range but you might be able to get a 2012 at a discount. I own last years Experience which rides great, and with the Campag Veloce group it will be way more exotic (for whatever exotic 999 quid will get you) than the others. And new Campy stuff works great, especially the brakes.
Btw, here's a review of the dolomite4 from the same site:
http://www.bikeradar.com/road/gear/category/bikes/road/product/review-pinnacle-bikes-dolomite-four-12-46684
In the end you need to pick the bike that's right for you. Just like picking a girlfriend, while getting some advice is fine, you don't want to leave the final choice your mates. The test ride is a great way to confirm the bike fits, you like the way it looks, and you like the way it rides.