Since I have owned neither I won't "talk my book" as many do about the system they own. I have heard both, many times and I would choose the Vandy's everytime. Especially with the refined and detailed music you describe listening to, the time and phase coherent nature of the Vandy's will be magical. I do like the Spendors, and they are a more impactful speaker and if you listened to more big orchestral or loud rock music then I would recommend the Spendors.
You will enjoy either of them, so good luck.
You will enjoy either of them, so good luck.