The ease of use for creating quotes or proposals to potential customers makes it very user friendly even if you are relatively new at using this application as an estimator/RFProposal creator! I dislike how difficult it can be sometimes when trying figure out why our estimates have been rejected and we did not get paid because they don't like them - seems unfair but there's really nothing else I've found so far which has helped solve my problem with estimating issues related to price changes made after release date due dates etc..