Pros: Excellent keyboard with ZERO lag and great range. Nice key feedback with decent travel distance, and spacing about equal with most notebooks. Trackball has an optical pickup that wont clog like old rollers. Comfortable design sits nicely on my lap, although my leg spread seems to be about 3-4" wider than what it was designed for. Smaller people (less than 230lbs and 6'2") shouldnt have this problem. Keyboard is just as comfortable holding it in your hands, with the trigger setup almost like a massive game console controller. Took no time to get used to the layout. NO DRIVERS NEEDED! Installed with default HID settings in XP, and works perfectly under Vista. Should also work with my PS3, since its HID-compliant keyboard and mouse seperately detected by th computer.

Cons: Key presses require slightly more pressure than a normal keyboard, and you occasionally lose a letter or 2 every so often.

Overall Review: Had to turn down the sensitivity on my desktop and notebook, as the previous setting was too high for this trackball. Once it was set down the trackball movement was perfect. Almost prefer these compared to touchpads or mice. The key layout is also kind of tight, takes a bit to get used to if you commonly use fullsize keyboards. If you are always on a notebook it should be no problem.

Pros: The case is built like a tank. Very good cross bracing, secure locking front panels, good modular assembly to install large components.

Cons: Like another reviewer mentioned some of the screw holes are misaligned for the motherboard mounting. With me ATX-sized motherboard the top right screwhole is about 1-2mm off. The others were almost not going to fit and it took some careful placement to get it all secure. Power supply worked for about 2 hours before randomly turning on and off. I pulled the plug after it kept turning on for 5 seconds only to quickly turn off again. Core 2 Duo motherboard with three hard drives and an SSD drawing about 100 watts from the wall as indicated by my Kill-a-Watt. Other areas of concern were one or two screw holes stripped in the case and one of the center 80mm fans had the wire entirely torn off. I guess you get what you pay for, at least shipping was free.