I like how easy it is to use, as well as its ability for customization! It's also integrated into our accounting system which makes life easier when we need access from anywhere within their application or ours (Quickbooks).
A few things that could be improved would include some more reports/tools available out-of box such as daily average check volume by store location etc., but overall this software has been very helpful in managing my stores' cash flow cycles through weekly reconciliation statements & running accurate P&Ls/balance sheets!! The best thing about using POS performance management service was definitely being able to see all inventory levels across multiple locations at once without having an additional reporting tool installed - so much time saved there too :).