Well,
Ive used both Studio 8 and Plus 9.
Found them both 'buggy' however I like the interface and its reconisable so I have just invested in Studio Plus 11.
After one false start - captured, edited and burnt my first 1 hour DVD with the new software without a glitch.
This may also be due to my knowlege of PCs is alot better now and I made sure all background programes were killed before rendering.
It also plays on my Sony DAVC880 which in the past has been useless and playing anything other than shop bought DVDs (Hence I had to buy a Philips to sit along side the Sony)
Already on the 1st patch but at the moment I would recomend 11.
I havnt tried any other software so this review may be a bit biased!!!