If you are left handed this mouse is not for you as it is shaped ergonomically for a right handed person. I have small hands and the scroll wheel is a bit of a stretch for me on this mouse but after using it for a while I was able to adjust. The thumb buttons are very well placed and are nice and clicky. The left and right buttons also have a nice tactile click. The ability to quickly switch DPI is a nice touch especially when gaming or editing videos and photos. The built in LEDs add some flash to the looks and can be turned off via a switch on the bottom of the mouse if the lights are not your style.
Overall the aLLreLi M515 is a well made, feature packed mouse, at a great price. If you are looking for a gaming mouse on a budget the M515 fits the bill.
If you are interested in the M515 it can be found here.