$150 is a very generous budget for a gaming mouse. I suggest doing a little research and consider these things when buying a very expensive mouse as you don't want to spend that kind of money on a mouse that you might regret later.
- Sensor: currently pixart 3366 is most accurate sensor on the market followed closely by its variants (3361/3360/3310 etc.)
- Weight balance: overall weight is important, some prefer lighter ~80g mouse and some gamers prefer heavier ~120g mouse. But more important is the weight balance, a poorly balanced mouse will make the mouse feel very awkward after a while of playing. Ideally the center of mass should be where the sensor is placed or slightly toward your inner palm. Although some prefer weights toward the front.
- Size/grip: using your current mouse as reference it is 4.9" long, 2.8" wide, 1.7" high. If you are really comfortable with this size and grip then try to look for a similar shaped mouse with the best available sensor.
- Cable: most prefer kevlar cable as these are very flexible and light so they have less drag. Some good mouse still use hard cable (e.g. G402, which are typically heavier and less flexible with lots of drag. Personally I'm a kevlar person as I hate it when hard cables get stuck on something or slightly pull my mouse in an awkward position as I have very small desk space.
- Mouse pad: this is also just as important as the sensor. Some sensors work better with certain surfaces, I would suggest sticking with proven combinations that other players use. A bad combination can cause sensor malfunction or other strange behaviour. Also think of mousepads as a way of adjusting glide friction, some pads are high friction and some are low friction glide it is just preference.
Consider all these things when purchasing your mouse. Good luck.
Take a look at osu TMP list:
https://docs.google.com/spreadsheets/d/ ... yRtQ2t4MHYCompilation of most 3360 sensor mouse:
http://www.overclock.net/t/1602282/lets ... r-everyoneList of popular FPS gamer mouse:
https://docs.google.com/spreadsheets/d/ ... LwqVkSmZcg