Mark is correct that the compression ratio of AVCHD is higher than HDV.

He is also correct that there is more (and better) support in video editing software for HDV than for AVCHD today.

I am interested in AVCHD due to the fact that I think this is where the industry is going and that vendors will slowly clean the poop off AVCHD such that it will in fact be superior to HDV, perhaps even in the next generation of AVCHD camcorders.

Zam
my blog: Digital Video and Film