Can anyone comment on the Pros and Cons of Addons 4 and 5. I was thinking of buying them. I output my PC to a 50" HDTV and I understand there is some HD enhancements in one of the addons.

I like to fly 30% Scale Aerobatic aircraft and Giant Scale Warbirds. I have the TrueScale addon, but what size are the aircraft included with Addons 4 and 5?