You should try searching... This comparision has been hashed over and over. To be breif, yes the H77 does have better contrast. I forget the numbers but something close to double after calibration of both units. Both do 1:1 and the Optoma's are VERY quiet! I believe the H77 is said to have a nicer picture too. Is it worth the price difference? Only you can determine that.. If you believe near double C/R and minimal to no fan noise is worth the extra $ then it is worth it..
IMO, yes it's worth it based on C/R and noise but I have never seen the 7700. Only read the reviews, comments, and testing results on the forum here.
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