I started out with Chorus floorstanders and then upgraded to Cobalt 816s a few years later. Very happy with them, and of course the Electras sound even better. If you like the Chorus then you might want to consider the Cobalts when you eventually upgrade. I'm a big fan of the JMLab sound.
Anyhow, as for what electronics to use, I'd probably favor the Cary even though I haven't heard it. Since the JMLabs are on the lean side they pair very well with tube gear in my experience. I'm using a Conrad Johnson PV-10B pre with a B&K ST125.2 amp and I'm very pleased with the results. At about $500-600 used, I'd consider the PV-10B a bargain and definitely a very good match for your speakers.
Just to throw it out there, the Audio Refinement integrated amp sounds great with the Chorus and Cobalt. Its amazingly smooth for solid state and even though its only 50 watts it will drive the speakers very, very loud. It's a real giant killer. You can get it used for around $500. I don't know what your budget is, but buying an Audio Refinement integrated and then putting the rest of the money into a cdp or saving it for an eventual speaker upgrade could be something to consider.
Anyhow, as for what electronics to use, I'd probably favor the Cary even though I haven't heard it. Since the JMLabs are on the lean side they pair very well with tube gear in my experience. I'm using a Conrad Johnson PV-10B pre with a B&K ST125.2 amp and I'm very pleased with the results. At about $500-600 used, I'd consider the PV-10B a bargain and definitely a very good match for your speakers.
Just to throw it out there, the Audio Refinement integrated amp sounds great with the Chorus and Cobalt. Its amazingly smooth for solid state and even though its only 50 watts it will drive the speakers very, very loud. It's a real giant killer. You can get it used for around $500. I don't know what your budget is, but buying an Audio Refinement integrated and then putting the rest of the money into a cdp or saving it for an eventual speaker upgrade could be something to consider.