Sex swings - which is best?

Helpful topic info on Sex slings:

Swings
I want to get a swing but need input on how hard they are to use.

Sling or wedge?
Which is more fun in your opinion? A wedge or a sling?

How many pillows do you need to fall asleep?
I personally need 2 pillows underneath my head and one between my legs to fall asleep. I actually have a full body pillow that I slip between my legs.

How do sex swings work?
does anyone know how a sex swing works and if there worth buying

Which pillow can double as back support while reading on bed?
I'm looking at the pillows for sale here and I'm just wondering which ones you think can be used for back support while sitting on the bed. Thanks.