Don Aleksander
firstly hiya and welcome
I too have the first 3 films on vhs as stand alone films. The DVD set is awesome though. It is a 5 disc set GF is on one disc, gf 2 is on 2 discs and gf3 is on one disc. Then, there is a great 'bonus disc' full of stuff (look out for the 'easter eggs postings, here on the BB about how to find extra stuff on the DVD use the search feature)
I also got the trilogy 25th anniversary boxed set which includes most (if not all) of the deleted scenes/added footage, on VHS. The individual films on VHS pale into comparison!!
FH