I have used many of the online vendors listed, with the exception of West because they are almost always the highest priced for like items. I do use the store when I need something now.
HOWEVER, I am surprised that not one person has recommended Sailnet. You know, the site that some seem to live on! You are already there, why not take a look?
The majority of my purchases have been from Sailnet and Defender. I don't think that Sailnet should get a free ride because of this site, but I do think that they should be considered. Prices are all over the board from different vendors on sailing gear. Sometimes Sailnet wins, sometimes Defender, sometimes others. But, give them a shot at your business at least.
Also, I have never had a customer service issue with either Sailnet or Defender. I was lucky not to get caught when the original Sailnet went down, but those troubles have nothing to do with todays Sailnet.