The best thing is that we can simulate our designs at different levels to get all information about it without actually building anything! We have been using this product for designing various products like sensors & electronics devices etc., as well has being used internally within my organization (my current employer) with great success over many years now!! I would say everything works fine but sometimes there are some issues related mainly due problems during compilation phase which requires restarting computer or reopening project folder where previous build was saved before closing/recompiling from scratch after making changes - so not very convenient if you do frequent builds throughout your day job duties :) Also no tool available yet specifically targeting FPGA design automation via VHDL language only :( So far i am happy enough because its still one among few options out here although maybe competition will increase soon :).