Get some lights.
If it came back noisy you didnt have enough light. The HVX200 needs more light than the DVX100b. I have an HVX and have learned to NOT TRUST THE LCD OR VIEWFINDER. Shots that look well lit usually arent. The camera is not meant for shooting night interiors under available home lighting. Try using an external monitor to judge light levels, grain and focus.
There is a wealth of HVX/DVX information here. Barry Green (who wrote your HVX book) and Jan Crittenden a Panasonic Rep read/post here all the time.