gdnrbob, the Audioquest is offered as a (straight) 90 degree only. Voodoo offers that plus one that changes the cord direction from straight to a right angle, as well as one that offers adjustable angles. All but the last are priced at $75, are really well made, and cryogenically treated (if that matters to you).
The problem I had with both the Audioquest and the Voodoo adaptors is that due to the stiffness and weight of beefy power cords, if the fit of the adaptor into the socket on the component it is used with is not sufficiently tight, the cord can cause the adaptor to pop out of the socket, obviously undesirable!