so after a bit of guess work as to which version was RTM i finally got my exe verified by mikey and did a clean install of vista on to my 15GB partition so i could multiboot with xp 3180 (awesome build btw, can’t wait RTM) vista was running as clean install of vista RTM usually does with its niggling problems, lack of drivers, super uber amounts of bloat and stupid defaults. so, i was all prepared to be wowed by sp1 as reviews had been good however it was not to be as to install it you need 3GB of free space which to be honest i should have expected as it was vista afterall.
it should have been easy to shift some spare GB from my system partition using vistas touted new drive management features but could only trim a feeble 200MB which i couldn’t move to my vista parition in the end anyway.
all in all, a very vista like experience which i’ll need to fix later by shifting around space when i get around to installing serenity.