what version of vages do i buy ?
 

The prices seem to vary greatly.
which is better ?
I have seen the following.

Sony Vegas Movie Studio 8.0 Video Editing Software NEW on eBay, also, Computer Recording Software, Pro Audio Equipment, Musical Instruments (end time 14-Sep-08 15:52:13 BST)

SONY VEGAS PRO 8 + DVD PROFESSIONAL VIDEO EDITING on eBay, also Editing, Video Software, Software, Computers Networking (end time 03-Sep-08 08:30:41 BST)

NEW AUTHENTIC SONY VEGAS PRO 8 VIDEO SOFTWARE NEW! on eBay, also Editing, Video Software, Software, Computers Networking (end time 03-Sep-08 21:21:54 BST)

Vegas Pro 8 is the current full featured version. Vegas Movie Studio Platinum is a subset of the Pro version (some features are not there). Vegas Movie Studio is a subset of the Movie Studio Platinum version. So it all depends on whether or not the cheaper versions have all the features you need. Otherwise, go for the full/Pro version.

If you need to author blu-ray DVDs, you'll need the Pro version with DVD Architect 5. The current Movie Studio Platinum version can edit HDV and burn blu-ray straight from the timeline but not author.

FYI - Movie Studio 9 is the latest version in the studio series.