We've got a King-size pocket-sprung mattress with a built in foam 'topper' and for the last 6 months I've had the best nights sleep of my life
Me and the wife haven't found any noticeable problems when 'getting jiggy with it' and I have no problems rolling over or with it creating a meteor shape where I sleep at night 
IIRC we paid ~ £500 from Dreams for just the mattress


IIRC we paid ~ £500 from Dreams for just the mattress