Needed: An off-the-shelf Notes based CRM

I've had a request to recommend an off-the-shelf Notes-based CRM which supports mobile devices. The product would be involved in a shootout with the Microsoft Dynamics CRM so it would be worth knowing how well the recommended Notes product has scored in previous product comparisons and what its key features are v. MS Dynamics.

The customer is running Notes 6.5 and not looking to upgrade to R8.5 in the near future so no XPage applications please.
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