I spent months researching and test driving 44 different SMS solutions before opening up January 2nd this year. I ultimately settled on Shop Boss and couldn't be happier. The price, support, and features are far above and beyond everything else I tried. My ideal features I needed/wanted included email/text, cloud based, unlimited applications/users, and a modern interface. If I have any gripes at all, I don't care for their parts integration (partstech/epicor/nexpart, although the worldpac integration does work well), and I'm not a fan of Motor for repair information, and that's all they offer. I opted for the silver plan (without repair information) and just pay for that separately. Silver plan is $159/month.