Hello Chris,
What a long time.....
AVCHD still sucks but with a system like an i7 say 860 onwards and running WIN7 64bit may get your footage running on the timeline reasonably well without any jerkiness but the
minute you add on either an effect or perhaps increase your preview quality things will change. Again depending from one software to the other again AVCHD
is handled better on Adobe CS4 than on still Vegas 9 Pro. IMO unless you intend puchasing and converting your highly compressed MTS to perhaps M2T or etc...
would not be worth the time unless you did not care about the extra step you have to take for post workflow. This of course is the same for Canon Mark II, 7D, Xactic
Cheers
VideoCobra
