This pump is great. The software is simple and fully-customizable. If you have a Mac, like I do, all you need is Paralells and Windows installed and it runs it perfect. The suck-release works great and the actual hardware is a very unassuming little box that needn't be stored privately- inconspicuous. Use with CTC's cylinders (which are above the rest) for maximum pleasure/function. Well-worth the money if you're a dedicated pumper and want to take advantage of technology.