Hi Mate ive had nearly 8 volvos now and to be honest sice 99 and ford took over i have had nothing but trouble,any parts that go wrong say a window switch you carnt just get a spare from a scrapper and fit them everything is programmed to the car so they are very expensive now and to be honest the ride isnt the best.
Any way if you want my vote go for the Omega thats why im here, Many of the family have them and have borrowed them a few times and i love them,yes they have problems but all cars do, But if you take the volvo option plan all your costs at main dealer or a specialist not your local garage,Hope this helps
Good luck either way,cheers Mark