Why to prioritize Exchange over Notes

Switching from one email application to another is never a decision which should be made without consideration. It is true that changing of email platforms on a large scale, like at corporate level is an expensive and huge process. But striving to accept the best is also necessary to boost the rate of development. When we talk about the entities situated at the top level, it becomes difficult to choose the best amongst them. Same is the case between MS Exchange and Lotus Notes.