Each to their own. Personally I wouldn't do legs in excess of 3 hours by choice, as it is nice to stop for a pee and a stretch of the legs. But i fly for fun and not for business meetings etc.. If I did, I'd probably take BA. The longest leg I've done was about 5 hrs and that was in a King Air, the total day was 8am until 23:30 and after that I was hacked off with being in an aeroplane and just wanted a glass of wine and a sleep
Cirrus have done a lot of things right - they make an attractive spacious aeroplane, it is reasonably fast, but also would appeal to non-aviation-women because there is no clambering over seats or joysticks
. It has advanced avionics, and the parachute, it is roomy and spacious.
The Mooney appeals more due it's speed and from a pilot perspective this is very attractive to us.
Still, my favorite aeroplane that I have flown is still the DA42. No propellor in the field of vision, and despite being slower that the others, looks best