I've never had a paid threesome that I would consider to be excellent. I also like hiring straight guys, and what almost always happened in my past experiences is that I become the "meat" in the sandwich, and the guys don't interact with one another. Also, one guy usually takes more of the lead and does more of the work than the other. However, all of these threesomes were with guys from the same bar, so in the future I will try what others have said and pick guys from different bars.