I've found that with missions.

Despite my TV only being about 5 years old when I was calibrating the brightness settings on set up i could not get the RockStar logo to display.

I see the best horse in the game is somewhere up in the North West snow regions. Might head on up there at some point - maybe when i've half a day free as no doubt it will be an hours fucking ride out there then another hour chasing the cunt