I've head of reliable a couple of times on various pages. They were pretty good with your car? I'm scared of shipping the dart, the other cars I don't care I'd they break or get scratched haha.
Reliable was a little slow. I had them transport my dart and a motorcycle. They left the day before me, and I passed them on lookout pass two days later. But that's better than a reckless driver! Cost was about $1k per car in an enclosed trailer.
If you're looking at shipping multiple cars, you can sometimes get a better rate by filling up the trailer. Most carry 4-6 cars, depending on the cars and the trailer. Best to call up the company for a custom quote vs online estimate tools, see what kind of deal you can make.