hi kaykayshah,
i have auditioned the Fusion 5 series from pro-fx once when i was in chennai. they performed very well with all diff types of audio/video that was used for the demo. however, the only thing i would prefer changing in that series is the sub since it is front-firing sub and i personally prefer the down-firing/down-ported ones, which is what i currently have.. the front speakers/center handle the output quite well..
i would suggest you to have an audition at the showroom before you decide.. and if you are a avid music listener ( more of stereo ), then you could choose the AMP from denon ( from two choices given ) for the more powerful amp rather than more features or vice-versa if you are into movies more..
regds,