I would at least take a look at Compuware's DCRUM portfolio, and compare the two. What is the goal of implementing the solution?

I would recommend spending a good portion of time deciding on what the goals of the Apm should be before deciding. This along with the maturity of the organization. Will this be a only It project or will it include the business at some time? Start with the goal and…

All valid points above In our case we find ourselves sometimes in the position to evaluate this on behalf of our customers. A point which I do not think has been mentioned in the above comments is the maturity of the organisation. Some organisations are very immature / old…