Upper limit on the number of item classes

Summary

Upper limit on the number of item classes

Content

Is there any upper limit on the number of item classes that can be setup. What is the optimal number of item classes we can create. we are working for a power and uitlity client where in we are trying to map their different sections of their items under different classes. It comes to around 2000 different types of items. Can we have 2000 item classes so that we can have the items grouped under common functionality while each group having unique features with respect to item number generation, item description rules etc.