During my project work (by group & at school), I’ve had the opportunity to work with Qlikview & SAP BO. I've been working with SAP BO for 1 year. On a scale from 1-5 (1=worst, 5=best), I would give SAP BO a 1. My experiences with SAP BO were not positive. But on a technical level, the way BO works to handle the loop is very good.
In our company we have to build lots of complex things to answer simple requirements. Luckily, the solution still works, nonetheless this product has a lot of room for improvement: we found the deployment of SAP BO to be very complex, and the initial setup complex as well. If I were advising others about to implement this product, I would tell them to search for a company who specialize in implementing BI.