I am here to announce that the Mac App Store is so much more snappier with 10.9 on my rMBP. Before 10.9 I use to hate even checking for update because I knew it would take forever to load. I only get about 1.83 mb/s on my home internet connection. But since the update, the Mac App Store is certainly lot faster and loads up very quickly. I makes browsing for Apps a much more enjoyable experience. THANK YOU APPLE, I hope this just gets better and better. If there is anything someone may want me to check out on 10.9 please let me know.