For those of you who have the Modern Chain large tote, is it really heavy? I know that I've read some PFers say that it gets quite heavy, especially when filled. Compared to the GST, is it A LOT heavier? Or about the same? I recently bought the GST and I feel my shoulder get a little sore after I use it... The white one looks so cute on omgsweet! I'm sure the bag is no longer available (unless someone has seen it lately??) but I see a couple here and there on eBay. TIA for your help!