Depends on the application and amount of use it'll get.
I service an account that has a high capacity dollar bill changer. It came with two Pyramid bill acceptors. They kept jamming every couple of days. The jam occured right where the bill exist the acceptor just before entering the bill box/stacker. This was happening for over six months. Pyramid was no help so we replaced them with two Mars bill acceptors. Granted, the Mars are very expensive, but in the year and a half that the Mars have been installed, there have been ZERO service calls and zero jams.
The Pyramid/Apex 5400 would be ok in low usage locations and you can update them for new currency with a laptop & free downloaded software. Pyramid makes retrofit circuit boards to update older Mars bill acceptors that Mars no longer supports. I have used some of these retrofit boards and they are excellent.