Ok so this requires Adobe Bridge to get sweet stocks, you can go directly between photoshop or illustrator to bridge by going file browse.
Goto Adobe Stock Photos and then Browse for stock photos using adobe bridge and when you find a stock u wana use then right click on it and go open with>Adobe Photoshop CS#, or Adobe Illustrator CS#. And then it will be opened up in the selected program, water-mark free.
They have some sweet stocks in there too