I contacted a handful of the top folks from Homestars, and found that the prices were generally in the same ball-park for my work.
In the end I chose to proceed with Century Aluminum based on others' reviews, and Gary's GREAT and VERY TIMELY communication.
Gary was super quick with the estimate, and the only change I made was to go with a heavier gauge aluminum.
Gary contacted me about a week later and asked if the installation could be done a couple of weeks earlier that originally planned, and that was a good thing for us.
The installation took place over two days (late afternoon Friday, and Saturday); his staff were very courteous and professional. Century Aluminum cleaned up around the house after their work each day
With our busy schedule, this was an incredibly great experience, as we didn't need to manage the process. All communication was done via email which worked VERY well for me and my schedule.
The day after the install there was a major rainstorm, and after spotting a few issues and telling Gary about them at 7AM, they were remedied the next day.
I would without a doubt recommend Century to anyone needing aluminum eavestrough work. Their work is great, and you can tell that Gary prides himself on his company's reputation and work quality.