I have spent a lot of time evaluating the various software packages out there (and there are quite a few)!!
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I did try to get MIRO to quote at one time but found they were too big an organisation to actually deal with the query. What I ended up with is an never ending spam e-mail from them telling me about their exploits.
In Europe you have AMOS, CAFAM and SaSiMS to name but a few of the better systems.
It depends on the type of operation you are running to decide what system is best for you.