The photo and video quality for the most part are the same between the models. So, if you really just want a powerful compact megazoom, save yourself some money; the HX9V is still an excellent camera a year after its release.
– photo credit – CNET
Bottom line is the HX30V has more horsepower and a lot more options but most people are probably not going to need or use all those options and as CNET indicates the photo quality between the two is identical. One area where the HX30V is better is autofocus and if you want FASTER autofocus the HX30V trashes the HX9V.
Read the full review at CNET.