I switched to Squid Proxies from a more expensive alternative about a year ago. They are every bit as good as YPP. They are very fast and reliable. They have always worked right out of the box. Their customer service is very quick, helpful and tolerant of my often stupid questions. I have used them with ScrapeBox, BookMarking Demon and Article Marketing Robot without a flaw. If you have a dynamically assigned IP they have a very nice "Proxy Manager" which will keep your authorized IP address up to date with changes in you dynamic IP, so things don't get stuck when your IP changes. They are the kind of Proxys you want. They just work without hassles. I highly recommend them.