The best thing about big eval, its simplicity of usage for both novice as expert users in terms of design or implementation process.
There are multiple ways of solving any problem you might face while implementing this tool which makes it very flexible. I don't think there's anything bad i can say abt Big Eval DQM tool other than maybe some improvement could be made with regards to UI/UX aspects like adding more features rather then just increasing font size etc but overall no complaints atleast so far! A great product if you're looking into building your own solution from scratch. We've been able to improve our QA efforts significantly since we implemented biGEVAL dqm.