Getting out of bed may not necessarily be the easiest for most folks but if you are seriously looking for one which will get you up the right way, check out the UpBed.
The UpBed Adjustable Lift Bed should answer most issues surrounding the way that people get up from their bed, particularly for the ones with physical limitations.
The bed is actually a great solution for the ones who have bad backs or are disabled in a certain way, somehow close to a hospital bed (when you talk about adjusting the height and angles). The only thing is that the UpBed seems to go as far as helping folks up on their feet or an upright position which should make it easy for them to stand on their feet.
Seemingly made as a medical bed of sorts, the UpBed Adjustable Lift Bed can be checked out at Firststreet.com.