Acid is the easiest software to use for chopping/arranging/processing loops. Fast, light and reliable, or at least it used to be...
Been an Acid 7 user for the last 5 years I've decided to upgrade and buy the latest version 10 and I am now absolutely disappointment with the current state of the program.
If you plan to use it with plugins, forget about it. All my legal 3rd party plugins are constantly crashing the program once opened and Magix support is close to non-existent, I sure regret not looking at their forum before upgrading, tons of posts about bugs that are not fixed and complains about the support of the Magix team.
I do hope they will fix it... try the beta version before buying!