I have used Yoink since its early releases, and seriously, I don’t know how I lived without it. It has become such a routine part of my workflow. It couldn’t be more seamless — start to drag an item, Yoink appears, release the item into Yoink’s tray. Then switch to the app/window you want and drag out. Done. And within the tray, you can preview, reorder, delete, etc. With the Option key, you can copy from the Yoink tray rather than move a file. Very intuitive.
I use Yoink with Rapidweaver, Pages, Keynote, Word, Photoshop, Illustrator, PowerPoint, Mail, Outlook, and more. I use it to install fonts in Font Book. Drag files between drives. Seriously, it’s indispendable.
The last version introduced an annoyance, but after user feedback, the developer addressed it in a quick release update. Great response.
I can’t recommend Yoink enough. Five stars.