Think I answered the question in another thread, young. PM Sterno, he's tried both Joye and Cisco 306's. I bummed/traded a couple of Joyes from him, and really enjoy them. I'll have to get the ciscos for my next purchase, but like you, I'm not entirely sure which ohm to try.
Come to think of it, I THINK Sterno told me he tried the 1.5's on the Cisco, and they were too hot for him. Don't think he's tried the 2 ohms.
Good luck on the sale tonight.