The ultimate mobile tool for organisation and efficiency has been often considered the BlackBerry. Modern workplace expectations are to be constantly connected, and support from the BlackBerry hardware and software makes this possible. Research in Motion or RIM®, are the designers of the BlackBerry smartphone series. Their signature devices provide solutions to various mobile users and their proprietary mobile operating system supports these devices. Merely selecting any available BlackBerry and getting it to fit your needs is not that simple. Examine your options closely and find the perfect match based on needs and functionality.The most affordable and simplest BlackBerry phones on the market are the BlackBerry Pearl and Curve. The Pearl, intended to introduce minor productivity applications to the wider world of mobile phone use, was the first BlackBerry device to offer an integrated camera and media playback. The Pearl offers a selection of models including the more popular BlackBerry Pearl 8120. The Pearl 8220 was RIM's first flip phone in this series. The Curve improved on these features by including a larger keyboard for quicker messaging, a more powerful processor, and a superior camera. While both versions are considered entry-level, they remain powerful communication devices with a wide range of useful functions for business and personal organisation. Locating these BlackBerry model types in good condition on the eBay marketplace is a straightforward task. This includes reviewing the model's benefits. For example, the Curve 8520 offers a track pad. Other models include the Curve 8300 and 8900 series which have been vibrant smartphones for many years. The latest Curve device is the 9300 which was released in 2010.Buyers in the market for enterprise technology should begin their search with the globetrotting BlackBerry Tour. Designed to fit the needs of international travelers, the Tour's main selling point is its compatibility with voice and data networks worldwide. While the Tour does not offer a Wi-Fi option, its relatively low cost and solid platform keep it competitive in a market dominated by expensive, limited smartphones. In the domestic US market, the BlackBerry Bold shines as the most powerful non-touchscreen BlackBerry available. If you're resisting the touchscreen, the Bold is an exceptional choice. Equipped with the latest in RIM's proprietary enterprise-level data security, a new high-resolution screen, and an incredibly precise keyboard, the Bold sets the standard for business communication devices. Due to a sudden surge in touchscreen popularity, refurbished Bolds and Tours are typically found at a value from the original MSRP.Released as a competitor to Apple's popular iPhone 3G, the touchscreen BlackBerry Storm brought touchscreen to the previously keyboard-oriented BlackBerry brand. Its more powerful, better optimised cousin, the BlackBerry Torch, goes one step further: A fully functional, hidden keyboard slides out from under the touchscreen for users who prefer the feel of physical keys. The interactivity of touchscreen technology and hardware makes the Torch stand out from competitors. The Torch and Storm are both available unlocked on eBay, so choice does not need to be guided by carrier availability. When planning to buy any BlackBerry device, it is important to consider power adapters, documentation and accessories. Please review the details before placing a bid or purchasing on eBay.