I am doing some research into the use of NHibernate over the use of the current data access layer we use at work. Overall, the results are very good compared with what we current had in place (lazy loading all properties, limited caching strategies to name a few), however I'm curious if anyone wants to ring in on past experience they have had with NHibernate. Our DBA is concerned that we will be losing out on cached execution plans from SQL Server by moving to NHibernate from stored procedures. It is my understanding that parameterize SQL can be just as fast, any comments?