Wouldn't touch a Vauxhall with a brage pole.
I know a several people at work that have them (Astra and Vectras mostly) as company cars and nobody is happy. And all prefered the Ford equivalent they had previously.

Issues include:
Dodgy electrics windows and locks
Aircon problems
Crank pulleys
Other mechanical problems that i can't remember at this moment.
Unrefined
And shit service standards.

Based on this i'd always go for the Ford equivalent, eg C-Max or S-Max with the Focus ST engine in.