Depends on what your willing to spend. Solid is about $5 a foot to install. Stranded is $25 to $40 a foot. At $40 a foot you can purchase JPS Labs. So what do you want to do?
The foundation of how well the electrical infrastructure performs has less to do with solid vs stranded than so, so much else. Every project needs to be assessed for what it is trying to accomplish.
I probably spend 15 to 20 hours of my time assessing every project, creating a specification for the contractor and overseeing the installation. I generally ask between $550 to $1250 soup to nuts. I have over 40 hour into some jobs. I'm an idiot for offering my time for so little return. I was offered $2,000 a day last week to start physically wiring systems myself. Its a shit show out there on what contractors really know. Or what they are willing to do, based upon their knowledge. I just can't do the physical work myself. And really, I don't need to do it. Life has played out well for me. But I love audio. I get excited designing an excellent electrical infrastructure to support an audio/video system. Its my passion. And I won't let a sloppy electrician blow through a project. I then end up an owner rep validating the accuracy of the install and the billing. I don't get extra money for this. I do it because my clients become my friends, and I do what I can to protect them.
I'm making this a lot more than the original posters question. But designing you electrical infrastructure is far deeper than solid vs stranded.
