For customization you can choose if you want it to work in the background, or only when you tell it to, you can tell it what parts you want to run in the background as well.
As for price its really not bad at the bottom of this post I will share a link that at the time of this writing you can buy it for $29.95, I have seen a lot higher for similar tools that do less. This is one of my first suggestions when someone tells me "My computer is very slow" I tell them to checkout System Mechanic and most see a big improvement.
Here are just a few of the things System Mechanic does
- Repairs registry
- Accelerates startup
- Recovers memory leaks
- Boosts internet speed
- Defragments drives
- Stops CPU-hogging processes
Here is the link I promised earlier to get the standard version for $29.95 Click Here
Or Get System Mechanic 14.5 Pro for $39.95. Save $30! [Coupon code: pcutilityiolosm30off].
It's normally $69.95