I've been using Vegas 5 for a few months now (after using Movie Maker) and I think its a quality product. Better transitions, chroma key etc etc
Its a bit of a vague question, but is there a massive difference between version 5 and 7. ie is it justifiable to spend nearly £400 to upgrade two versions? (as priced at Amazon (Amazon.co.uk: Sony Vegas 7+DVD (PC): Software)
Also is there any news/gossip about a VISTA version?