I have been using it at my current and previous jobs without any major complaints. The interface is a bit clunky. Booking one flight but three hotels can be a bit confusing the first time you use it.

The flight search engine is also not the best - plus it is there to enforce corporate travel policy, so I don't really blame Concur for pushing me to take the two stop flight over the non-stop because it is $101 cheaper. For example, my last Mexico trip the non-stop flight was pretty expensive because I was within 14 days on the outbound (or it was just sold). As a DTW captive, I prefer Delta, but Concur pushed me to one-stop flights both ways. I was able to force a better price and routing by a multi-city trip through Chicago to pick up Aero Mexico, then got my non-stop return on Delta.

As for expenses, I love the ability to e-mail myself receipts and have them show up in my receipt store. Just snap a picture with your phone and send it to myinbox @ concursolutions.com and it will automatically be there when you go to do your expense report.

No complaints about payment of personal charges. Typically they are direct deposited in my bank account within 48 hours of manager approval of an expense report. I do find it odd the way they pay Amex. If you have 20 charges on one expense report, Concur makes 20 payments to Amex. If I had a $400 flight, $100 hotel, and $30 dinner, they post paymenst of $400, $100 and $30. Personal charges do not get paid that way - just one lump sum.